Bash and grep: Difference between revisions
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<metadesc>Basic grep examples.</metadesc> | <metadesc>Basic grep examples.</metadesc> | ||
=== Common grep switches === | === Common grep switches === | ||
Show line number of match | ==Show line number of match== | ||
<pre> | <pre> | ||
grep -n <string> <file(s)> | grep -n <string> <file(s)> | ||
</pre> | </pre> | ||
Insensitive match | ==Insensitive match== | ||
<pre> | <pre> | ||
grep -i <string> <file(s)> | grep -i <string> <file(s)> | ||
</pre> | </pre> | ||
Before and after # lines from match | ==Before and after # lines from match== | ||
<pre> | <pre> | ||
grep -A# -B# <string> <file(s)> | grep -A# -B# <string> <file(s)> | ||
</pre> | </pre> | ||
==Regex example== | |||
<pre> | |||
grep -iE 'app[-]?(blue\|green)?' | |||
Will match: | |||
app | |||
app-blue | |||
app-green | |||
</pre> | |||
[[Category:Bash]] | [[Category:Bash]] | ||
Latest revision as of 10:10, 8 July 2024
Common grep switches
Show line number of match
grep -n <string> <file(s)>
Insensitive match
grep -i <string> <file(s)>
Before and after # lines from match
grep -A# -B# <string> <file(s)>
Regex example
grep -iE 'app[-]?(blue\|green)?' Will match: app app-blue app-green