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-<!--
-title: "Simple patterns"
-description: "Netdata supports simple patterns, which are less cryptic versions of regular expressions. Use familiar notation for powerful results."
-custom_edit_url: https://github.com/netdata/netdata/edit/master/libnetdata/simple_pattern/README.md
-sidebar_label: "Simple patterns"
-learn_status: "Published"
-learn_topic_type: "Tasks"
-learn_rel_path: "Developers/libnetdata"
--->
-
-# Simple patterns
-
-Unix prefers regular expressions. But they are just too hard, too cryptic
-to use, write and understand.
-
-So, Netdata supports **simple patterns**.
-
-Simple patterns are a space separated list of words, that can have `*`
-as a wildcard. Each word may use any number of `*`. Simple patterns
-allow **negative** matches by prefixing a word with `!`.
-
-So, `pattern = !*bad* *` will match anything, except all those that
-contain the word `bad`.
-
-Simple patterns are quite powerful: `pattern = *foobar* !foo* !*bar *`
-matches everything containing `foobar`, except strings that start
-with `foo` or end with `bar`.
-
-You can use the Netdata command line to check simple patterns,
-like this:
-
-```sh
-# netdata -W simple-pattern '*foobar* !foo* !*bar *' 'hello world'
-RESULT: MATCHED - pattern '*foobar* !foo* !*bar *' matches 'hello world'
-
-# netdata -W simple-pattern '*foobar* !foo* !*bar *' 'hello world bar'
-RESULT: NOT MATCHED - pattern '*foobar* !foo* !*bar *' does not match 'hello world bar'
-
-# netdata -W simple-pattern '*foobar* !foo* !*bar *' 'hello world foobar'
-RESULT: MATCHED - pattern '*foobar* !foo* !*bar *' matches 'hello world foobar'
-```
-
-Netdata stops processing to the first positive or negative match
-(left to right). If it is not matched by either positive or negative
-patterns, it is denied at the end.
-
-