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Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 169 (from laksa160)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa169.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://stackoverflow.com/questions/14447131/kill-all-detached-screen-sessions\')), getAhrefsUnparsedNoserviceFromURL(\'https://stackoverflow.com/questions/14447131/kill-all-detached-screen-sessions\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/stackoverflow.com\/questions\/14447131\/kill-all-detached-screen-sessions","crawl_time":1768134016,"first_indexed_time":1499471513,"http_code":200,"src_unparsed":"com,stackoverflow!\/questions\/14447131\/kill-all-detached-screen-sessions s443","src_root_hash":"714406497480128969","history_drop_reason":null,"meta_title":"batch processing - Kill all detached screen sessions - Stack Overflow","meta_descriptions":[],"attrs_boilerpipe_text":"This question shows research effort; it is useful and clear\n68\nSave this question.\nShow activity on this post.\nWhen I execute\nscreen -ls\n, I see the following. How can I kill all the detached sessions?\nThere are screens on:\n        84918.ttys002.ros-mbp   (Detached)\n        84944.ttys008.ros-mbp   (Detached)\n        84970.ttys013.ros-mbp   (Attached)\n        84998.ttys002.ros-mbp   (Detached)\n        85024.ttys002.ros-mbp   (Detached)\n5 Sockets in \/var\/folders\/86\/062qtcyx2rxbnmn8mtpkyghs0r0r_z\/T\/.screen.\ndouble-beep\n5,688\n19 gold badges\n43 silver badges\n50 bronze badges\nasked\nJan 21, 2013 at 21:00\n2\nThis answer is useful\n112\nSave this answer.\nShow activity on this post.\nscreen -ls | grep pts | cut -d. -f1 | awk '{print $1}' | xargs kill\nKill\nonly Detached\nscreen sessions (credit @schatten):\nscreen -ls | grep Detached | cut -d. -f1 | awk '{print $1}' | xargs kill\nanswered\nJun 20, 2013 at 3:58\n4 Comments\nGood solution, thanks. But it also kills attached session. I used this one\nscreen -ls | grep Detached | cut -d. -f1 | awk '{print $1}' | xargs kill\n2013-11-14T18:54:46.817Z+00:00\n@schatten Could you explain the working of the command separately per pipe?\n2014-07-20T16:55:02.81Z+00:00\n@MusséRedi\nscreen -ls\n– does not start a new screen, but lists all screen sessions;\ngrep Detached\n– detached sessions are marked as 'Detached' in the previous output;\ncut -d. -f1\n- splits every string by \".\"(-d.) and then select only the first part (-f1), this way we have only pid with possible leading spaces;\nawk {print $1}\n– it reads the input line and splits it by spaces, so basically in this case it just removes leading spaces;\nxargs kill\n– runs\nkill\ncmd with appended arguments from stdin, so for every line you would get a\nkill <pid>\n.\n2014-07-30T00:47:25.267Z+00:00\nIf you're on a Linux box, not Apple, you'll need\nscreen -ls | grep Detached | cut -d. -f1 | awk '{print $1}' | xargs -r kill\nto prevent the command erroring if there are no current screens running (especially useful in bash scripts)\n2016-07-29T09:06:50.093Z+00:00\nThis answer is useful\n28\nSave this answer.\nShow activity on this post.\nHere's a solution that combines all the answers:  Add this to your\n.bashrc\nor\n.bash_profile\n:\nkillscreens () {\n    screen -ls | grep Detached | cut -d. -f1 | awk '{print $1}' | xargs kill\n}\nthis is a convenient function, easy to remember\nkills only the detached screens, to stop you from doing something dumb\nremember to open a new bash terminal or run\nsource .bashrc\nto make\nkillscreens\navailable\nThanks to @Rose Perrone, @Milind Shah, and @schatten\nanswered\nMay 12, 2014 at 17:16\nComments\nThis answer is useful\n11\nSave this answer.\nShow activity on this post.\nInclude this function in your .bash_profile:\nkilld () {\n    for session in $(screen -ls | grep -o '[0-9]\\{4\\}')\n    do\n        screen -S \"${session}\" -X quit;\n    done\n}\nTo run it, call\nkilld\n. This will kill all screen sessions, detached or not.\nFlimm\n155k\n49 gold badges\n284 silver badges\n295 bronze badges\nanswered\nJan 21, 2013 at 21:00\nRose Perrone\n64k\n61 gold badges\n216 silver badges\n251 bronze badges\n2 Comments\nThat should be\n'[0-9]\\{3,\\}'\n2013-04-17T13:29:52.11Z+00:00\nElegant solution, one that is goo dto haev\n2015-01-09T18:44:28.597Z+00:00\nThis answer is useful\n3\nSave this answer.\nShow activity on this post.\nCombining Edward Newell's and Rose Perrone's solutions into a more readable and \"screen\" like solution.\nAdd below to your\n.bashrc\nor\n.bash_profile\n.\n# function for killing all detached screen sessions\nkillds() {\n    detached_sessions=$(screen -ls | grep Detached | cut -d. -f1 | awk '{print $1}')\n    for s in ${detached_sessions}\n    do\n        screen -S \"${s}\" -X quit;\n    done\n}\nanswered\nMar 20, 2019 at 15:27\njmc1337\n91\n1 silver badge\n6 bronze badges\nComments\nThis answer is useful\n1\nSave this answer.\nShow activity on this post.\nIf the screens are dead, use:\nscreen -wipe\nanswered\nMar 29, 2017 at 17:54\nComments\nThis answer is useful\n0\nSave this answer.\nShow activity on this post.\n'[0-9]\\{3,\\}'\nin case of\nThere is a screen on:\n20505.blabla    (03\/05\/2014 22:16:25)   (Detached)\n1 Socket in \/var\/run\/screen\/S-blabla.\nwill match both 20505 and 2014, where quitting 2014 will return \"No screen session found.\"\n[0-9]\\{3,\\}\\.\\S*\nmight work.\nI've always encountered pattern 20505.\nname\n, where\nname\nis either host name or session name if screen was launched with -S flag. Works on OS X and Debian, might not be universal.\nanswered\nMay 3, 2014 at 20:28\nkroko\n131\n2 silver badges\n6 bronze badges\nComments\nStart asking to get answers\nFind the answer to your question by asking.\nAsk question\nExplore related questions\nSee similar questions with these tags.","attrs_markdown":"# ![site logo](https:\/\/stackoverflow.com\/Content\/Img\/SE-logo75.png)\nBy clicking “Sign up”, you agree to our [terms of service](https:\/\/stackoverflow.com\/legal\/terms-of-service\/public) and acknowledge you have read our [privacy policy](https:\/\/stackoverflow.com\/legal\/privacy-policy).\n\n# OR\n\nAlready have an account? [Log in](https:\/\/stackoverflow.com\/users\/login)\n\n[Skip to main content](https:\/\/stackoverflow.com\/questions\/14447131\/kill-all-detached-screen-sessions#content)\n\n[Stack Overflow](https:\/\/stackoverflow.com\/)\n\n1. [About](https:\/\/stackoverflow.co\/)\n2. Products\n3. [For Teams](https:\/\/stackoverflow.co\/internal\/)\n\n1. 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[Learn more](https:\/\/stackoverflow.co\/internal\/?utm_medium=referral&utm_source=stackoverflow-community&utm_campaign=side-bar&utm_content=explore-teams-compact)\n\n##### Collectives™ on Stack Overflow\nFind centralized, trusted content and collaborate around the technologies you use most.\n\n[Learn more about Collectives](https:\/\/stackoverflow.com\/collectives)\n\n**Stack Internal**\n\nKnowledge at work\n\nBring the best of human thought and AI automation together at your work.\n\n[Explore Stack Internal](https:\/\/stackoverflow.co\/internal\/?utm_medium=referral&utm_source=stackoverflow-community&utm_campaign=side-bar&utm_content=explore-teams-compact-popover)\n\n# [Kill all detached screen sessions](https:\/\/stackoverflow.com\/questions\/14447131\/kill-all-detached-screen-sessions)\n[Ask Question](https:\/\/stackoverflow.com\/questions\/ask)\n\nAsked\n\n12 years, 11 months ago\n\nModified [2 years, 10 months ago](https:\/\/stackoverflow.com\/questions\/14447131\/kill-all-detached-screen-sessions?lastactivity \"2023-02-17 17:34:56Z\")\n\nViewed 93k times\n\nThis question shows research effort; it is useful and clear\n\n68\n\nSave this question.\n\nShow activity on this post.\n\nWhen I execute `screen -ls`, I see the following. How can I kill all the detached sessions?\n```\nThere are screens on:\n        84918.ttys002.ros-mbp   (Detached)\n        84944.ttys008.ros-mbp   (Detached)\n        84970.ttys013.ros-mbp   (Attached)\n        84998.ttys002.ros-mbp   (Detached)\n        85024.ttys002.ros-mbp   (Detached)\n5 Sockets in \/var\/folders\/86\/062qtcyx2rxbnmn8mtpkyghs0r0r_z\/T\/.screen.\n```\n\n- [session](https:\/\/stackoverflow.com\/questions\/tagged\/session \"show questions tagged 'session'\")\n- [batch-processing](https:\/\/stackoverflow.com\/questions\/tagged\/batch-processing \"show questions tagged 'batch-processing'\")\n- [gnu-screen](https:\/\/stackoverflow.com\/questions\/tagged\/gnu-screen \"show questions tagged 'gnu-screen'\")\n\n[Share](https:\/\/stackoverflow.com\/q\/14447131 \"Short permalink to this question\")\n\nShare a link to this question\n\nCopy link\n\n[CC BY-SA 3.0](https:\/\/creativecommons.org\/licenses\/by-sa\/3.0\/ \"The current license for this post: CC BY-SA 3.0\")\n\n[Improve this question](https:\/\/stackoverflow.com\/posts\/14447131\/edit)\n\nFollow\n\nFollow this question to receive notifications\n\n[edited Feb 17, 2023 at 17:34](https:\/\/stackoverflow.com\/posts\/14447131\/revisions \"show all edits to this post\")\n\n[![double-beep's user avatar](https:\/\/www.gravatar.com\/avatar\/e478f2600848a3dc5238b7ffb2e148f6?s=64&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/10607772\/double-beep)\n\n[double-beep](https:\/\/stackoverflow.com\/users\/10607772\/double-beep)\n\n5,6881919 gold badges4343 silver badges5050 bronze badges\n\nasked Jan 21, 2013 at 21:00\n\n[![Rose Perrone's user avatar](https:\/\/www.gravatar.com\/avatar\/09650c0dfd63d0cdfeee378b7c5945ed?s=64&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/365298\/rose-perrone)\n\n[Rose Perrone](https:\/\/stackoverflow.com\/users\/365298\/rose-perrone)\n\n64k6161 gold badges216216 silver badges251251 bronze badges\n\n2\n\n- 1\n  possible duplicate of [Kill detached screen session](http:\/\/stackoverflow.com\/questions\/1509677\/kill-detached-screen-session)\n  \n  Léo Léopold Hertz 준영\n  \n  – [Léo Léopold Hertz 준영](https:\/\/stackoverflow.com\/users\/54964\/l%C3%A9o-l%C3%A9opold-hertz-%EC%A4%80%EC%98%81 \"143,176 reputation\")\n  \n  2013-01-21 21:10:19 +00:00\n  \n  [Commented Jan 21, 2013 at 21:10](https:\/\/stackoverflow.com\/questions\/14447131\/kill-all-detached-screen-sessions#comment20118447_14447131)\n- 2\n  I've since switch to **tmux**, which is a better version of screen.\n  \n  Rose Perrone\n  \n  – [Rose Perrone](https:\/\/stackoverflow.com\/users\/365298\/rose-perrone \"63,986 reputation\")\n  \n  2013-06-20 15:49:52 +00:00\n  \n  [Commented Jun 20, 2013 at 15:49](https:\/\/stackoverflow.com\/questions\/14447131\/kill-all-detached-screen-sessions#comment29224434_14447131)\n\n[Add a comment](https:\/\/stackoverflow.com\/questions\/14447131\/kill-all-detached-screen-sessions \"Use comments to ask for more information or suggest improvements. Avoid answering questions in comments.\")   \\|\n\n## 6 Answers 6\nSorted by:\n\n[Reset to default](https:\/\/stackoverflow.com\/questions\/14447131\/kill-all-detached-screen-sessions?answertab=scoredesc#tab-top)\n\nThis answer is useful\n\n112\n\nSave this answer.\n\nShow activity on this post.\n\n`screen -ls | grep pts | cut -d. -f1 | awk '{print $1}' | xargs kill`\n\nKill **only Detached** screen sessions (credit @schatten):\n\n`screen -ls | grep Detached | cut -d. -f1 | awk '{print $1}' | xargs kill`\n\n[Share](https:\/\/stackoverflow.com\/a\/17205014 \"Short permalink to this answer\")\n\nShare a link to this answer\n\nCopy link\n\n[CC BY-SA 3.0](https:\/\/creativecommons.org\/licenses\/by-sa\/3.0\/ \"The current license for this post: CC BY-SA 3.0\")\n\n[Improve this answer](https:\/\/stackoverflow.com\/posts\/17205014\/edit)\n\nFollow\n\nFollow this answer to receive notifications\n\n[edited Mar 30, 2017 at 0:12](https:\/\/stackoverflow.com\/posts\/17205014\/revisions \"show all edits to this post\")\n\n[![Geoffrey Hale's user avatar](https:\/\/i.sstatic.net\/usin4.png?s=64)](https:\/\/stackoverflow.com\/users\/1438029\/geoffrey-hale)\n\n[Geoffrey Hale](https:\/\/stackoverflow.com\/users\/1438029\/geoffrey-hale)\n\n11\\.7k55 gold badges4646 silver badges4949 bronze badges\n\nanswered Jun 20, 2013 at 3:58\n\n[![Milind Shah's user avatar](https:\/\/www.gravatar.com\/avatar\/17f2ae37720b559014687016c1a08c4f?s=64&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/2503620\/milind-shah)\n\n[Milind Shah](https:\/\/stackoverflow.com\/users\/2503620\/milind-shah)\n\n1,13711 gold badge77 silver badges22 bronze badges\n\nSign up to request clarification or add additional context in comments.\n\n## 4 Comments\nAdd a comment\n\n[![](https:\/\/www.gravatar.com\/avatar\/3bce668e8f8e80ce17fc2d630fa596d9?s=48&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/925675\/schatten)\n\nschatten\n\n[schatten](https:\/\/stackoverflow.com\/users\/925675\/schatten)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/14447131\/kill-all-detached-screen-sessions#comment29753967_17205014)\n\nGood solution, thanks. But it also kills attached session. I used this one `screen -ls | grep Detached | cut -d. -f1 | awk '{print $1}' | xargs kill`\n\n2013-11-14T18:54:46.817Z+00:00\n\n40\n\nReply\n\n- Copy link\n\n[![](https:\/\/www.gravatar.com\/avatar\/f16e4a7bbe9b9e5291a8c93e3f935ef0?s=48&d=identicon&r=PG&f=y&so-version=2)](https:\/\/stackoverflow.com\/users\/3646263\/muss%C3%A9-redi)\n\nMussé Redi\n\n[Mussé Redi](https:\/\/stackoverflow.com\/users\/3646263\/muss%C3%A9-redi)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/14447131\/kill-all-detached-screen-sessions#comment38592184_17205014)\n\n@schatten Could you explain the working of the command separately per pipe?\n\n2014-07-20T16:55:02.81Z+00:00\n\n0\n\nReply\n\n- Copy link\n\n[![](https:\/\/www.gravatar.com\/avatar\/3bce668e8f8e80ce17fc2d630fa596d9?s=48&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/925675\/schatten)\n\nschatten\n\n[schatten](https:\/\/stackoverflow.com\/users\/925675\/schatten)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/14447131\/kill-all-detached-screen-sessions#comment38921863_17205014)\n\n@MusséRedi `screen -ls` – does not start a new screen, but lists all screen sessions; `grep Detached` – detached sessions are marked as 'Detached' in the previous output; `cut -d. -f1` - splits every string by \".\"(-d.) and then select only the first part (-f1), this way we have only pid with possible leading spaces; `awk {print $1}` – it reads the input line and splits it by spaces, so basically in this case it just removes leading spaces; `xargs kill` – runs `kill` cmd with appended arguments from stdin, so for every line you would get a `kill <pid>`.\n\n2014-07-30T00:47:25.267Z+00:00\n\n7\n\nReply\n\n- Copy link\n\n[![](https:\/\/www.gravatar.com\/avatar\/d068edea1bead593aef5840dff0d500a?s=48&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/190625\/richard)\n\nRichard\n\n[Richard](https:\/\/stackoverflow.com\/users\/190625\/richard)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/14447131\/kill-all-detached-screen-sessions#comment64690954_17205014)\n\nIf you're on a Linux box, not Apple, you'll need `screen -ls | grep Detached | cut -d. -f1 | awk '{print $1}' | xargs -r kill` to prevent the command erroring if there are no current screens running (especially useful in bash scripts)\n\n2016-07-29T09:06:50.093Z+00:00\n\n2\n\nReply\n\n- Copy link\n\nAdd a comment\n\nThis answer is useful\n\n28\n\nSave this answer.\n\nShow activity on this post.\n\nHere's a solution that combines all the answers: Add this to your `.bashrc` or `.bash_profile`:\n```\nkillscreens () {\n    screen -ls | grep Detached | cut -d. -f1 | awk '{print $1}' | xargs kill\n}\n```\n- this is a convenient function, easy to remember\n- kills only the detached screens, to stop you from doing something dumb\n- remember to open a new bash terminal or run `source .bashrc` to make `killscreens` available\n\n*Thanks to @Rose Perrone, @Milind Shah, and @schatten*\n\n[Share](https:\/\/stackoverflow.com\/a\/23615051 \"Short permalink to this answer\")\n\nShare a link to this answer\n\nCopy link\n\n[CC BY-SA 3.0](https:\/\/creativecommons.org\/licenses\/by-sa\/3.0\/ \"The current license for this post: CC BY-SA 3.0\")\n\n[Improve this answer](https:\/\/stackoverflow.com\/posts\/23615051\/edit)\n\nFollow\n\nFollow this answer to receive notifications\n\nanswered May 12, 2014 at 17:16\n\n[![Edward Newell's user avatar](https:\/\/www.gravatar.com\/avatar\/8bd95c391c0143df5c823d00cfe3b28e?s=64&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/1467306\/edward-newell)\n\n[Edward Newell](https:\/\/stackoverflow.com\/users\/1467306\/edward-newell)\n\n18\\.9k88 gold badges3737 silver badges3737 bronze badges\n\n## Comments\nAdd a comment\n\nThis answer is useful\n\n11\n\nSave this answer.\n\nShow activity on this post.\n\nInclude this function in your .bash\\_profile:\n```\nkilld () {\n    for session in $(screen -ls | grep -o '[0-9]\\{4\\}')\n    do\n        screen -S \"${session}\" -X quit;\n    done\n}\n```\nTo run it, call `killd`. This will kill all screen sessions, detached or not.\n\n[Share](https:\/\/stackoverflow.com\/a\/14447132 \"Short permalink to this answer\")\n\nShare a link to this answer\n\nCopy link\n\n[CC BY-SA 3.0](https:\/\/creativecommons.org\/licenses\/by-sa\/3.0\/ \"The current license for this post: CC BY-SA 3.0\")\n\n[Improve this answer](https:\/\/stackoverflow.com\/posts\/14447132\/edit)\n\nFollow\n\nFollow this answer to receive notifications\n\n[edited Apr 17, 2013 at 13:10](https:\/\/stackoverflow.com\/posts\/14447132\/revisions \"show all edits to this post\")\n\n[![Flimm's user avatar](https:\/\/www.gravatar.com\/avatar\/936383b387d6cc6d51279e429e5d7cd9?s=64&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/247696\/flimm)\n\n[Flimm](https:\/\/stackoverflow.com\/users\/247696\/flimm)\n\n155k4949 gold badges284284 silver badges295295 bronze badges\n\nanswered Jan 21, 2013 at 21:00\n\n[![Rose Perrone's user avatar](https:\/\/www.gravatar.com\/avatar\/09650c0dfd63d0cdfeee378b7c5945ed?s=64&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/365298\/rose-perrone)\n\n[Rose Perrone](https:\/\/stackoverflow.com\/users\/365298\/rose-perrone)\n\n64k6161 gold badges216216 silver badges251251 bronze badges\n\n## 2 Comments\nAdd a comment\n\n[![](https:\/\/www.gravatar.com\/avatar\/936383b387d6cc6d51279e429e5d7cd9?s=48&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/247696\/flimm)\n\nFlimm\n\n[Flimm](https:\/\/stackoverflow.com\/users\/247696\/flimm)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/14447131\/kill-all-detached-screen-sessions#comment22921463_14447132)\n\nThat should be `'[0-9]\\{3,\\}'`\n\n2013-04-17T13:29:52.11Z+00:00\n\n3\n\nReply\n\n- Copy link\n\n[![](https:\/\/i.sstatic.net\/boPSI.jpg?s=64)](https:\/\/stackoverflow.com\/users\/1847873\/arash-saidi)\n\nArash Saidi\n\n[Arash Saidi](https:\/\/stackoverflow.com\/users\/1847873\/arash-saidi)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/14447131\/kill-all-detached-screen-sessions#comment44136698_14447132)\n\nElegant solution, one that is goo dto haev\n\n2015-01-09T18:44:28.597Z+00:00\n\n0\n\nReply\n\n- Copy link\n\nThis answer is useful\n\n3\n\nSave this answer.\n\nShow activity on this post.\n\nCombining Edward Newell's and Rose Perrone's solutions into a more readable and \"screen\" like solution.\n\nAdd below to your `.bashrc` or `.bash_profile`.\n```\n# function for killing all detached screen sessions\nkillds() {\n    detached_sessions=$(screen -ls | grep Detached | cut -d. -f1 | awk '{print $1}')\n    for s in ${detached_sessions}\n    do\n        screen -S \"${s}\" -X quit;\n    done\n}\n```\n\n[Share](https:\/\/stackoverflow.com\/a\/55264440 \"Short permalink to this answer\")\n\nShare a link to this answer\n\nCopy link\n\n[CC BY-SA 4.0](https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/ \"The current license for this post: CC BY-SA 4.0\")\n\n[Improve this answer](https:\/\/stackoverflow.com\/posts\/55264440\/edit)\n\nFollow\n\nFollow this answer to receive notifications\n\nanswered Mar 20, 2019 at 15:27\n\n[![jmc1337's user avatar](https:\/\/i.sstatic.net\/jsoTG.jpg?s=64)](https:\/\/stackoverflow.com\/users\/7649055\/jmc1337)\n\n[jmc1337](https:\/\/stackoverflow.com\/users\/7649055\/jmc1337)\n\n9111 silver badge66 bronze badges\n\n## Comments\nAdd a comment\n\nThis answer is useful\n\n1\n\nSave this answer.\n\nShow activity on this post.\n\nIf the screens are dead, use:\n```\nscreen -wipe\n```\n\n[Share](https:\/\/stackoverflow.com\/a\/43100740 \"Short permalink to this answer\")\n\nShare a link to this answer\n\nCopy link\n\n[CC BY-SA 3.0](https:\/\/creativecommons.org\/licenses\/by-sa\/3.0\/ \"The current license for this post: CC BY-SA 3.0\")\n\n[Improve this answer](https:\/\/stackoverflow.com\/posts\/43100740\/edit)\n\nFollow\n\nFollow this answer to receive notifications\n\nanswered Mar 29, 2017 at 17:54\n\n[![TransientObject's user avatar](https:\/\/www.gravatar.com\/avatar\/315b8c6af22fe79022e34fb2f38c75ba?s=64&d=identicon&r=PG&f=y&so-version=2)](https:\/\/stackoverflow.com\/users\/6418212\/transientobject)\n\n[TransientObject](https:\/\/stackoverflow.com\/users\/6418212\/transientobject)\n\n19155 bronze badges\n\n## Comments\nAdd a comment\n\nThis answer is useful\n\n0\n\nSave this answer.\n\nShow activity on this post.\n\n```\n'[0-9]\\{3,\\}'\n```\nin case of\n```\nThere is a screen on:\n20505.blabla    (03\/05\/2014 22:16:25)   (Detached)\n1 Socket in \/var\/run\/screen\/S-blabla.\n```\nwill match both 20505 and 2014, where quitting 2014 will return \"No screen session found.\"\n```\n[0-9]\\{3,\\}\\.\\S*\n```\nmight work.\n\nI've always encountered pattern 20505.*name*, where *name* is either host name or session name if screen was launched with -S flag. 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Boilerpipe Text	This question shows research effort; it is useful and clear 68 Save this question. Show activity on this post. When I execute screen -ls , I see the following. How can I kill all the detached sessions? There are screens on: 84918.ttys002.ros-mbp (Detached) 84944.ttys008.ros-mbp (Detached) 84970.ttys013.ros-mbp (Attached) 84998.ttys002.ros-mbp (Detached) 85024.ttys002.ros-mbp (Detached) 5 Sockets in /var/folders/86/062qtcyx2rxbnmn8mtpkyghs0r0r_z/T/.screen. double-beep 5,688 19 gold badges 43 silver badges 50 bronze badges asked Jan 21, 2013 at 21:00 2 This answer is useful 112 Save this answer. Show activity on this post. screen -ls \| grep pts \| cut -d. -f1 \| awk '{print $1}' \| xargs kill Kill only Detached screen sessions (credit @schatten): screen -ls \| grep Detached \| cut -d. -f1 \| awk '{print $1}' \| xargs kill answered Jun 20, 2013 at 3:58 4 Comments Good solution, thanks. But it also kills attached session. I used this one screen -ls \| grep Detached \| cut -d. -f1 \| awk '{print $1}' \| xargs kill 2013-11-14T18:54:46.817Z+00:00 @schatten Could you explain the working of the command separately per pipe? 2014-07-20T16:55:02.81Z+00:00 @MusséRedi screen -ls – does not start a new screen, but lists all screen sessions; grep Detached – detached sessions are marked as 'Detached' in the previous output; cut -d. -f1 - splits every string by "."(-d.) and then select only the first part (-f1), this way we have only pid with possible leading spaces; awk {print $1} – it reads the input line and splits it by spaces, so basically in this case it just removes leading spaces; xargs kill – runs kill cmd with appended arguments from stdin, so for every line you would get a kill <pid> . 2014-07-30T00:47:25.267Z+00:00 If you're on a Linux box, not Apple, you'll need screen -ls \| grep Detached \| cut -d. -f1 \| awk '{print $1}' \| xargs -r kill to prevent the command erroring if there are no current screens running (especially useful in bash scripts) 2016-07-29T09:06:50.093Z+00:00 This answer is useful 28 Save this answer. Show activity on this post. Here's a solution that combines all the answers: Add this to your .bashrc or .bash_profile : killscreens () { screen -ls \| grep Detached \| cut -d. -f1 \| awk '{print $1}' \| xargs kill } this is a convenient function, easy to remember kills only the detached screens, to stop you from doing something dumb remember to open a new bash terminal or run source .bashrc to make killscreens available Thanks to @Rose Perrone, @Milind Shah, and @schatten answered May 12, 2014 at 17:16 Comments This answer is useful 11 Save this answer. Show activity on this post. Include this function in your .bash_profile: killd () { for session in $(screen -ls \| grep -o '[0-9]\{4\}') do screen -S "${session}" -X quit; done } To run it, call killd . This will kill all screen sessions, detached or not. Flimm 155k 49 gold badges 284 silver badges 295 bronze badges answered Jan 21, 2013 at 21:00 Rose Perrone 64k 61 gold badges 216 silver badges 251 bronze badges 2 Comments That should be '[0-9]\{3,\}' 2013-04-17T13:29:52.11Z+00:00 Elegant solution, one that is goo dto haev 2015-01-09T18:44:28.597Z+00:00 This answer is useful 3 Save this answer. Show activity on this post. Combining Edward Newell's and Rose Perrone's solutions into a more readable and "screen" like solution. Add below to your .bashrc or .bash_profile . # function for killing all detached screen sessions killds() { detached_sessions=$(screen -ls \| grep Detached \| cut -d. -f1 \| awk '{print $1}') for s in ${detached_sessions} do screen -S "${s}" -X quit; done } answered Mar 20, 2019 at 15:27 jmc1337 91 1 silver badge 6 bronze badges Comments This answer is useful 1 Save this answer. Show activity on this post. If the screens are dead, use: screen -wipe answered Mar 29, 2017 at 17:54 Comments This answer is useful 0 Save this answer. Show activity on this post. '[0-9]\{3,\}' in case of There is a screen on: 20505.blabla (03/05/2014 22:16:25) (Detached) 1 Socket in /var/run/screen/S-blabla. will match both 20505 and 2014, where quitting 2014 will return "No screen session found." [0-9]\{3,\}\.\S* might work. I've always encountered pattern 20505. name , where name is either host name or session name if screen was launched with -S flag. Works on OS X and Debian, might not be universal. answered May 3, 2014 at 20:28 kroko 131 2 silver badges 6 bronze badges Comments Start asking to get answers Find the answer to your question by asking. Ask question Explore related questions See similar questions with these tags.
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[Explore Stack Internal](https://stackoverflow.co/internal/?utm_medium=referral&utm_source=stackoverflow-community&utm_campaign=side-bar&utm_content=explore-teams-compact-popover) # [Kill all detached screen sessions](https://stackoverflow.com/questions/14447131/kill-all-detached-screen-sessions) [Ask Question](https://stackoverflow.com/questions/ask) Asked 12 years, 11 months ago Modified [2 years, 10 months ago](https://stackoverflow.com/questions/14447131/kill-all-detached-screen-sessions?lastactivity "2023-02-17 17:34:56Z") Viewed 93k times This question shows research effort; it is useful and clear 68 Save this question. Show activity on this post. When I execute `screen -ls`, I see the following. How can I kill all the detached sessions? ``` There are screens on: 84918.ttys002.ros-mbp (Detached) 84944.ttys008.ros-mbp (Detached) 84970.ttys013.ros-mbp (Attached) 84998.ttys002.ros-mbp (Detached) 85024.ttys002.ros-mbp (Detached) 5 Sockets in /var/folders/86/062qtcyx2rxbnmn8mtpkyghs0r0r_z/T/.screen. ``` - [session](https://stackoverflow.com/questions/tagged/session "show questions tagged 'session'") - [batch-processing](https://stackoverflow.com/questions/tagged/batch-processing "show questions tagged 'batch-processing'") - [gnu-screen](https://stackoverflow.com/questions/tagged/gnu-screen "show questions tagged 'gnu-screen'") [Share](https://stackoverflow.com/q/14447131 "Short permalink to this question") Share a link to this question Copy link [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/ "The current license for this post: CC BY-SA 3.0") [Improve this question](https://stackoverflow.com/posts/14447131/edit) Follow Follow this question to receive notifications [edited Feb 17, 2023 at 17:34](https://stackoverflow.com/posts/14447131/revisions "show all edits to this post") [![double-beep's user avatar](https://www.gravatar.com/avatar/e478f2600848a3dc5238b7ffb2e148f6?s=64&d=identicon&r=PG)](https://stackoverflow.com/users/10607772/double-beep) [double-beep](https://stackoverflow.com/users/10607772/double-beep) 5,6881919 gold badges4343 silver badges5050 bronze badges asked Jan 21, 2013 at 21:00 [![Rose Perrone's user avatar](https://www.gravatar.com/avatar/09650c0dfd63d0cdfeee378b7c5945ed?s=64&d=identicon&r=PG)](https://stackoverflow.com/users/365298/rose-perrone) [Rose Perrone](https://stackoverflow.com/users/365298/rose-perrone) 64k6161 gold badges216216 silver badges251251 bronze badges 2 - 1 possible duplicate of [Kill detached screen session](http://stackoverflow.com/questions/1509677/kill-detached-screen-session) Léo Léopold Hertz 준영 – [Léo Léopold Hertz 준영](https://stackoverflow.com/users/54964/l%C3%A9o-l%C3%A9opold-hertz-%EC%A4%80%EC%98%81 "143,176 reputation") 2013-01-21 21:10:19 +00:00 [Commented Jan 21, 2013 at 21:10](https://stackoverflow.com/questions/14447131/kill-all-detached-screen-sessions#comment20118447_14447131) - 2 I've since switch to tmux, which is a better version of screen. Rose Perrone – [Rose Perrone](https://stackoverflow.com/users/365298/rose-perrone "63,986 reputation") 2013-06-20 15:49:52 +00:00 [Commented Jun 20, 2013 at 15:49](https://stackoverflow.com/questions/14447131/kill-all-detached-screen-sessions#comment29224434_14447131) [Add a comment](https://stackoverflow.com/questions/14447131/kill-all-detached-screen-sessions "Use comments to ask for more information or suggest improvements. Avoid answering questions in comments.") \\| ## 6 Answers 6 Sorted by: [Reset to default](https://stackoverflow.com/questions/14447131/kill-all-detached-screen-sessions?answertab=scoredesc#tab-top) This answer is useful 112 Save this answer. Show activity on this post. `screen -ls \| grep pts \| cut -d. -f1 \| awk '{print $1}' \| xargs kill` Kill only Detached screen sessions (credit @schatten): `screen -ls \| grep Detached \| cut -d. -f1 \| awk '{print $1}' \| xargs kill` [Share](https://stackoverflow.com/a/17205014 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/ "The current license for this post: CC BY-SA 3.0") [Improve this answer](https://stackoverflow.com/posts/17205014/edit) Follow Follow this answer to receive notifications [edited Mar 30, 2017 at 0:12](https://stackoverflow.com/posts/17205014/revisions "show all edits to this post") [![Geoffrey Hale's user avatar](https://i.sstatic.net/usin4.png?s=64)](https://stackoverflow.com/users/1438029/geoffrey-hale) [Geoffrey Hale](https://stackoverflow.com/users/1438029/geoffrey-hale) 11\.7k55 gold badges4646 silver badges4949 bronze badges answered Jun 20, 2013 at 3:58 [![Milind Shah's user avatar](https://www.gravatar.com/avatar/17f2ae37720b559014687016c1a08c4f?s=64&d=identicon&r=PG)](https://stackoverflow.com/users/2503620/milind-shah) [Milind Shah](https://stackoverflow.com/users/2503620/milind-shah) 1,13711 gold badge77 silver badges22 bronze badges Sign up to request clarification or add additional context in comments. ## 4 Comments Add a comment [![](https://www.gravatar.com/avatar/3bce668e8f8e80ce17fc2d630fa596d9?s=48&d=identicon&r=PG)](https://stackoverflow.com/users/925675/schatten) schatten [schatten](https://stackoverflow.com/users/925675/schatten) [Over a year ago](https://stackoverflow.com/questions/14447131/kill-all-detached-screen-sessions#comment29753967_17205014) Good solution, thanks. But it also kills attached session. I used this one `screen -ls \| grep Detached \| cut -d. -f1 \| awk '{print $1}' \| xargs kill` 2013-11-14T18:54:46.817Z+00:00 40 Reply - Copy link [![](https://www.gravatar.com/avatar/f16e4a7bbe9b9e5291a8c93e3f935ef0?s=48&d=identicon&r=PG&f=y&so-version=2)](https://stackoverflow.com/users/3646263/muss%C3%A9-redi) Mussé Redi [Mussé Redi](https://stackoverflow.com/users/3646263/muss%C3%A9-redi) [Over a year ago](https://stackoverflow.com/questions/14447131/kill-all-detached-screen-sessions#comment38592184_17205014) @schatten Could you explain the working of the command separately per pipe? 2014-07-20T16:55:02.81Z+00:00 0 Reply - Copy link [![](https://www.gravatar.com/avatar/3bce668e8f8e80ce17fc2d630fa596d9?s=48&d=identicon&r=PG)](https://stackoverflow.com/users/925675/schatten) schatten [schatten](https://stackoverflow.com/users/925675/schatten) [Over a year ago](https://stackoverflow.com/questions/14447131/kill-all-detached-screen-sessions#comment38921863_17205014) @MusséRedi `screen -ls` – does not start a new screen, but lists all screen sessions; `grep Detached` – detached sessions are marked as 'Detached' in the previous output; `cut -d. -f1` - splits every string by "."(-d.) and then select only the first part (-f1), this way we have only pid with possible leading spaces; `awk {print $1}` – it reads the input line and splits it by spaces, so basically in this case it just removes leading spaces; `xargs kill` – runs `kill` cmd with appended arguments from stdin, so for every line you would get a `kill <pid>`. 2014-07-30T00:47:25.267Z+00:00 7 Reply - Copy link [![](https://www.gravatar.com/avatar/d068edea1bead593aef5840dff0d500a?s=48&d=identicon&r=PG)](https://stackoverflow.com/users/190625/richard) Richard [Richard](https://stackoverflow.com/users/190625/richard) [Over a year ago](https://stackoverflow.com/questions/14447131/kill-all-detached-screen-sessions#comment64690954_17205014) If you're on a Linux box, not Apple, you'll need `screen -ls \| grep Detached \| cut -d. -f1 \| awk '{print $1}' \| xargs -r kill` to prevent the command erroring if there are no current screens running (especially useful in bash scripts) 2016-07-29T09:06:50.093Z+00:00 2 Reply - Copy link Add a comment This answer is useful 28 Save this answer. Show activity on this post. Here's a solution that combines all the answers: Add this to your `.bashrc` or `.bash_profile`: ``` killscreens () { screen -ls \| grep Detached \| cut -d. -f1 \| awk '{print $1}' \| xargs kill } ``` - this is a convenient function, easy to remember - kills only the detached screens, to stop you from doing something dumb - remember to open a new bash terminal or run `source .bashrc` to make `killscreens` available Thanks to @Rose Perrone, @Milind Shah, and @schatten [Share](https://stackoverflow.com/a/23615051 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/ "The current license for this post: CC BY-SA 3.0") [Improve this answer](https://stackoverflow.com/posts/23615051/edit) Follow Follow this answer to receive notifications answered May 12, 2014 at 17:16 [![Edward Newell's user avatar](https://www.gravatar.com/avatar/8bd95c391c0143df5c823d00cfe3b28e?s=64&d=identicon&r=PG)](https://stackoverflow.com/users/1467306/edward-newell) [Edward Newell](https://stackoverflow.com/users/1467306/edward-newell) 18\.9k88 gold badges3737 silver badges3737 bronze badges ## Comments Add a comment This answer is useful 11 Save this answer. Show activity on this post. Include this function in your .bash\_profile: ``` killd () { for session in $(screen -ls \| grep -o '[0-9]\{4\}') do screen -S "${session}" -X quit; done } ``` To run it, call `killd`. This will kill all screen sessions, detached or not. [Share](https://stackoverflow.com/a/14447132 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/ "The current license for this post: CC BY-SA 3.0") [Improve this answer](https://stackoverflow.com/posts/14447132/edit) Follow Follow this answer to receive notifications [edited Apr 17, 2013 at 13:10](https://stackoverflow.com/posts/14447132/revisions "show all edits to this post") [![Flimm's user avatar](https://www.gravatar.com/avatar/936383b387d6cc6d51279e429e5d7cd9?s=64&d=identicon&r=PG)](https://stackoverflow.com/users/247696/flimm) [Flimm](https://stackoverflow.com/users/247696/flimm) 155k4949 gold badges284284 silver badges295295 bronze badges answered Jan 21, 2013 at 21:00 [![Rose Perrone's user avatar](https://www.gravatar.com/avatar/09650c0dfd63d0cdfeee378b7c5945ed?s=64&d=identicon&r=PG)](https://stackoverflow.com/users/365298/rose-perrone) [Rose Perrone](https://stackoverflow.com/users/365298/rose-perrone) 64k6161 gold badges216216 silver badges251251 bronze badges ## 2 Comments Add a comment [![](https://www.gravatar.com/avatar/936383b387d6cc6d51279e429e5d7cd9?s=48&d=identicon&r=PG)](https://stackoverflow.com/users/247696/flimm) Flimm [Flimm](https://stackoverflow.com/users/247696/flimm) [Over a year ago](https://stackoverflow.com/questions/14447131/kill-all-detached-screen-sessions#comment22921463_14447132) That should be `'[0-9]\{3,\}'` 2013-04-17T13:29:52.11Z+00:00 3 Reply - Copy link [![](https://i.sstatic.net/boPSI.jpg?s=64)](https://stackoverflow.com/users/1847873/arash-saidi) Arash Saidi [Arash Saidi](https://stackoverflow.com/users/1847873/arash-saidi) [Over a year ago](https://stackoverflow.com/questions/14447131/kill-all-detached-screen-sessions#comment44136698_14447132) Elegant solution, one that is goo dto haev 2015-01-09T18:44:28.597Z+00:00 0 Reply - Copy link This answer is useful 3 Save this answer. Show activity on this post. Combining Edward Newell's and Rose Perrone's solutions into a more readable and "screen" like solution. Add below to your `.bashrc` or `.bash_profile`. ``` # function for killing all detached screen sessions killds() { detached_sessions=$(screen -ls \| grep Detached \| cut -d. -f1 \| awk '{print $1}') for s in ${detached_sessions} do screen -S "${s}" -X quit; done } ``` [Share](https://stackoverflow.com/a/55264440 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/ "The current license for this post: CC BY-SA 4.0") [Improve this answer](https://stackoverflow.com/posts/55264440/edit) Follow Follow this answer to receive notifications answered Mar 20, 2019 at 15:27 [![jmc1337's user avatar](https://i.sstatic.net/jsoTG.jpg?s=64)](https://stackoverflow.com/users/7649055/jmc1337) [jmc1337](https://stackoverflow.com/users/7649055/jmc1337) 9111 silver badge66 bronze badges ## Comments Add a comment This answer is useful 1 Save this answer. Show activity on this post. If the screens are dead, use: ``` screen -wipe ``` [Share](https://stackoverflow.com/a/43100740 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/ "The current license for this post: CC BY-SA 3.0") [Improve this answer](https://stackoverflow.com/posts/43100740/edit) Follow Follow this answer to receive notifications answered Mar 29, 2017 at 17:54 [![TransientObject's user avatar](https://www.gravatar.com/avatar/315b8c6af22fe79022e34fb2f38c75ba?s=64&d=identicon&r=PG&f=y&so-version=2)](https://stackoverflow.com/users/6418212/transientobject) [TransientObject](https://stackoverflow.com/users/6418212/transientobject) 19155 bronze badges ## Comments Add a comment This answer is useful 0 Save this answer. Show activity on this post. ``` '[0-9]\{3,\}' ``` in case of ``` There is a screen on: 20505.blabla (03/05/2014 22:16:25) (Detached) 1 Socket in /var/run/screen/S-blabla. ``` will match both 20505 and 2014, where quitting 2014 will return "No screen session found." ``` [0-9]\{3,\}\.\S* ``` might work. I've always encountered pattern 20505.name, where name is either host name or session name if screen was launched with -S flag. Works on OS X and Debian, might not be universal. [Share](https://stackoverflow.com/a/23449457 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/ "The current license for this post: CC BY-SA 3.0") [Improve this answer](https://stackoverflow.com/posts/23449457/edit) Follow Follow this answer to receive notifications [edited May 3, 2014 at 20:38](https://stackoverflow.com/posts/23449457/revisions "show all edits to this post") answered May 3, 2014 at 20:28 [![kroko's user avatar](https://i.sstatic.net/HcbiK.jpg?s=64)](https://stackoverflow.com/users/1979530/kroko) [kroko](https://stackoverflow.com/users/1979530/kroko) 13122 silver badges66 bronze badges ## Comments Add a comment Start asking to get answers Find the answer to your question by asking. 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