🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 19 (from laksa049)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa019.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 = 5 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.hostafrica.com/blog/linux/howto-use-linux-screen-command/\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.hostafrica.com/blog/linux/howto-use-linux-screen-command/\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.hostafrica.com\/blog\/linux\/howto-use-linux-screen-command\/","crawl_time":1760020547,"first_indexed_time":1671583089,"http_code":200,"src_unparsed":"com,hostafrica!www,\/blog\/linux\/howto-use-linux-screen-command\/ s443","src_root_hash":"7748922968354941019","history_drop_reason":null,"meta_title":"HowTo: Use Linux Screen command - HOSTAFRICA","meta_descriptions":["Linux Screen lets you do amazing things. Using Screen, you can use multiple shell windows from a single SSH session. Linux Screen enables you to keep a shell active even through network disruptions."],"meta_canonical":null,"ml_categories_json":"{\"\/Computers_and_Electronics\":964,\"\/Computers_and_Electronics\/Software\":658,\"\/Computers_and_Electronics\/Software\/Operating_Systems\":456,\"\/Internet_and_Telecom\":220,\"\/Internet_and_Telecom\/Web_Services\":109}","ml_types_json":"{\"\/Article\":996,\"\/Article\/How_to\":804}","ml_intent_types_json":"{\"Informational\":999}","meta_language":"en","attrs_author":null,"attrs_publish_time":1522178387,"attrs_original_publish_time":1522178387,"attrs_is_republished":0,"attrs_nr_words":"1946","attrs_boilerpipe_nr_words":"1063","body_ext_links_number":16,"body_int_links_number":97,"meta_nofollow":0,"meta_noarchive":0,"props_was_rendered":0,"src_redirect":"","download_time_msec":1868,"download_ttfb_msec":1658,"download_size":30462}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📍

LOCATION

Host 19 · Partition 5

laksa019

7748922968354941019

🚫

NOT INDEXABLE

✅

CRAWLED

7 months ago

🚫

ROBOTS BLOCKED

Page Info Filters

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	FAIL	`download_stamp > now() - 6 MONTH`	7.9 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://www.hostafrica.com/blog/linux/howto-use-linux-screen-command/

Last Crawled

2025-10-09 14:35:47 (7 months ago)

First Indexed

2022-12-21 00:38:09 (3 years ago)

HTTP Status Code

200

Content

Meta Title

HowTo: Use Linux Screen command - HOSTAFRICA

Meta Description

Linux Screen lets you do amazing things. Using Screen, you can use multiple shell windows from a single SSH session. Linux Screen enables you to keep a shell active even through network disruptions.

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		96.4%
/Computers_and_Electronics/Software		65.8%
/Computers_and_Electronics/Software/Operating_Systems		45.6%
/Internet_and_Telecom		22.0%
/Internet_and_Telecom/Web_Services		10.9%

Raw JSON

{
    "/Computers_and_Electronics": 964,
    "/Computers_and_Electronics/Software": 658,
    "/Computers_and_Electronics/Software/Operating_Systems": 456,
    "/Internet_and_Telecom": 220,
    "/Internet_and_Telecom/Web_Services": 109
}

ML Page Types

/Article		99.6%
/Article/How_to		80.4%

Raw JSON

{
    "/Article": 996,
    "/Article/How_to": 804
}

ML Intent Types

Informational

99.9%

Raw JSON

{
    "Informational": 999
}

Content Metadata

Language

Author

null

Publish Time

2018-03-27 19:19:47 (8 years ago)

Original Publish Time

2018-03-27 19:19:47 (8 years ago)

Republished

Word Count (Total)

1,946

Word Count (Content)

1,063

Links

External Links

Internal Links

Technical SEO

Meta Nofollow

Meta Noarchive

JS Rendered

Redirect Target

null

Performance

Download Time (ms)

1,868

TTFB (ms)

1,658

Download Size (bytes)

30,462

Location

Host ID

19 (laksa019)

Partition ID

Root Hash

7748922968354941019

Unparsed URL

com,hostafrica!www,/blog/linux/howto-use-linux-screen-command/ s443