Difference between revisions of "Awk"
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| − | [[awk]] is a [[command]] for string operations. | + | [[awk]] is a [[command]] for string operations. For example, it allows you to show only the second ''column'' of a file. awk is not a simple command, but rather a programming language on its own. awk and gawk (for GNU awk) are used synonymously. |
;Examples: | ;Examples: | ||
Revision as of 15:23, 25 July 2009
awk is a command for string operations. For example, it allows you to show only the second column of a file. awk is not a simple command, but rather a programming language on its own. awk and gawk (for GNU awk) 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
