🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 40 (from laksa080)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa040.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, meta_canonical AS meta_canonical, ml_categories_json AS ml_categories_json, ml_types_json AS ml_types_json, ml_intent_types_json AS ml_intent_types_json, meta_language AS meta_language, attrs_author AS attrs_author, ifNull(toUnixTimestamp(attrs_publish_time), 0) AS attrs_publish_time, ifNull(toUnixTimestamp(attrs_original_publish_time), 0) AS attrs_original_publish_time, ifNull(attrs_is_republished, 0) AS attrs_is_republished, ifNull(attrs_nr_words, 0) AS attrs_nr_words, ifNull(attrs_boilerpipe_nr_words, 0) AS attrs_boilerpipe_nr_words, ifNull(body_ext_links_number, 0) AS body_ext_links_number, ifNull(body_int_links_number, 0) AS body_int_links_number, ifNull(meta_nofollow, 0) AS meta_nofollow, ifNull(meta_noarchive, 0) AS meta_noarchive, ifNull(props_was_rendered, 0) AS props_was_rendered, ifNull(src_redirect, \'\') AS src_redirect, ifNull(download_time_msec, 0) AS download_time_msec, ifNull(download_ttfb_msec, 0) AS download_ttfb_msec, ifNull(download_size, 0) AS download_size FROM crawler3.page_info_local FINAL PREWHERE int_partition_id = 59 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://ostechnix.com/screen-command-examples-to-manage-multiple-terminal-sessions/\')), getAhrefsUnparsedNoserviceFromURL(\'https://ostechnix.com/screen-command-examples-to-manage-multiple-terminal-sessions/\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/ostechnix.com\/screen-command-examples-to-manage-multiple-terminal-sessions\/","crawl_time":1780066463,"first_indexed_time":1595638929,"http_code":200,"src_unparsed":"com,ostechnix!\/screen-command-examples-to-manage-multiple-terminal-sessions\/ s443","src_root_hash":"10538567265436171840","history_drop_reason":null,"meta_title":"Screen Command Examples To Manage Multiple Terminal Sessions","meta_descriptions":["This guide explains what is GNU Screen and the basic usage of Screen command with examples in Linux and Unix operating systems."],"meta_canonical":null,"ml_categories_json":"{\"\/Computers_and_Electronics\":973,\"\/Computers_and_Electronics\/Software\":818,\"\/Computers_and_Electronics\/Software\/Software_Utilities\":481,\"\/Internet_and_Telecom\":185,\"\/Internet_and_Telecom\/Web_Services\":115,\"\/Internet_and_Telecom\/Web_Services\/Web_Design_and_Development\":104}","ml_types_json":"{\"\/Article\":986,\"\/Article\/Tutorial_or_Guide\":948}","ml_intent_types_json":"{\"Informational\":999}","meta_language":"en-us","attrs_author":null,"attrs_publish_time":1559834788,"attrs_original_publish_time":1559834788,"attrs_is_republished":0,"attrs_nr_words":"2469","attrs_boilerpipe_nr_words":"1435","body_ext_links_number":20,"body_int_links_number":58,"meta_nofollow":0,"meta_noarchive":0,"props_was_rendered":0,"src_redirect":"","download_time_msec":294,"download_ttfb_msec":262,"download_size":40588}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📍

LOCATION

Host 40 · Partition 59

laksa040

10538567265436171840

📄

INDEXABLE

✅

CRAWLED

4 days ago

🤖

ROBOTS ALLOWED

Page Info Filters

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	0.2 months ago
History drop	PASS	`isNull(history_drop_reason)`	No drop reason
Spam/ban	PASS	`fh_dont_index != 1 AND ml_spam_score = 0`	ml_spam_score=0
Canonical	PASS	`meta_canonical IS NULL OR = '' OR = src_unparsed`	Not set

Page Details

Property

Value

URL

https://ostechnix.com/screen-command-examples-to-manage-multiple-terminal-sessions/

Last Crawled

2026-05-29 14:54:23 (4 days ago)

First Indexed

2020-07-25 01:02:09 (5 years ago)

HTTP Status Code

200

Content

Meta Title

Screen Command Examples To Manage Multiple Terminal Sessions

Meta Description

This guide explains what is GNU Screen and the basic usage of Screen command with examples in Linux and Unix operating systems.

Meta Canonical

null

Boilerpipe Text

heavy column, fetched on demand

Markdown

heavy column, fetched on demand

Readable Markdown

heavy column, fetched on demand

ML Classification

ML Categories

/Computers_and_Electronics		97.3%
/Computers_and_Electronics/Software		81.8%
/Computers_and_Electronics/Software/Software_Utilities		48.1%
/Internet_and_Telecom		18.5%
/Internet_and_Telecom/Web_Services		11.5%
/Internet_and_Telecom/Web_Services/Web_Design_and_Development		10.4%

Raw JSON

{
    "/Computers_and_Electronics": 973,
    "/Computers_and_Electronics/Software": 818,
    "/Computers_and_Electronics/Software/Software_Utilities": 481,
    "/Internet_and_Telecom": 185,
    "/Internet_and_Telecom/Web_Services": 115,
    "/Internet_and_Telecom/Web_Services/Web_Design_and_Development": 104
}

ML Page Types

/Article		98.6%
/Article/Tutorial_or_Guide		94.8%

Raw JSON

{
    "/Article": 986,
    "/Article/Tutorial_or_Guide": 948
}

ML Intent Types

Informational

99.9%

Raw JSON

{
    "Informational": 999
}

Content Metadata

Language

en-us

Author

null

Publish Time

2019-06-06 15:26:28 (6 years ago)

Original Publish Time

2019-06-06 15:26:28 (6 years ago)

Republished

Word Count (Total)

2,469

Word Count (Content)

1,435

Links

External Links

Internal Links

Technical SEO

Meta Nofollow

Meta Noarchive

JS Rendered

Redirect Target

null

Performance

Download Time (ms)

294

TTFB (ms)

262

Download Size (bytes)

40,588

Location

Host ID

40 (laksa040)

Partition ID

Root Hash

10538567265436171840

Unparsed URL

com,ostechnix!/screen-command-examples-to-manage-multiple-terminal-sessions/ s443