Difference between revisions of "Awk"
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| − | [[awk]] is a [[command]] for string operations. It allows you to only show the third ''column'' of a file for example. | + | [[awk]] is a [[command]] for string operations. It allows you to only show the third ''column'' of a file for example. awk is not a simple command, but rather a programming language on its own. awk and gawk, its GNU implementation, are used synonymously. |
;Examples: | ;Examples: | ||
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kill all processes of a user | kill all processes of a user | ||
[[ps]] --no-header -fu <username> | [[awk]] '{ print $2 }' | [[grep]] -v $$ | [[xargs]] kill | [[ps]] --no-header -fu <username> | [[awk]] '{ print $2 }' | [[grep]] -v $$ | [[xargs]] kill | ||
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| + | = See also = | ||
| + | * [http://man-wiki.net/index.php/Awk gawk man page] | ||
Revision as of 15:22, 25 July 2009
awk is a command for string operations. It allows you to only show the third column of a file for example. awk is not a simple command, but rather a programming language on its own. awk and gawk, its GNU implementation, are used synonymously.
- Examples
Show only the second column of file.txt
awk '{print $2;}' file.txt
kill all processes of a user
ps --no-header -fu <username> | awk '{ print $2 }' | grep -v $$ | xargs kill
