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| author | johannst <johannst@users.noreply.github.com> | 2022-09-23 18:47:33 +0000 |
|---|---|---|
| committer | johannst <johannst@users.noreply.github.com> | 2022-09-23 18:47:33 +0000 |
| commit | 0c31b8e434d634c81479bf396c752d1baaff7603 (patch) | |
| tree | 6c40cd3d712262791f52257ec8ed50aa6dc3633d /tools/awk.html | |
| parent | 4e80ad2d34f307991562c364b157d1c7a502cd96 (diff) | |
| download | notes-0c31b8e434d634c81479bf396c752d1baaff7603.tar.gz notes-0c31b8e434d634c81479bf396c752d1baaff7603.zip | |
deploy: 47218d271f20b39610d5f63b3bc7dfc86642bdba
Diffstat (limited to 'tools/awk.html')
| -rw-r--r-- | tools/awk.html | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/awk.html b/tools/awk.html index abcd01b..3234d89 100644 --- a/tools/awk.html +++ b/tools/awk.html @@ -233,6 +233,10 @@ but this is a function and return value can be assigned to a variable.</p> </code></pre> <p>The pattern <code>NR%2 == 0</code> matches every second record and the action <code>{ print $0 }</code> prints the whole record.</p> +<h3 id="negative-patterns"><a class="header" href="#negative-patterns">Negative patterns</a></h3> +<pre><code class="language-bash">awk '!/^#/ { print $1 }' <file> +</code></pre> +<p>Matches records not starting with <code>#</code>.</p> <h3 id="access-last-fields-in-records"><a class="header" href="#access-last-fields-in-records">Access last fields in records</a></h3> <pre><code class="language-bash">echo 'a b c d e f' | awk '{ print $NF $(NF-1) }' </code></pre> |