Difference between revisions of "Tr"
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Revision as of 11:39, 3 December 2008
Tr is a little linux utility which translates standard input and returns in standard output. It is useful for easily converting from uppercase to lowercase, etc...
Examples
>for i in `find | grep Nomfich`; do j=`echo $i | tr [Nom] [nom]`; if [ $i != $j ]; then mv $i $j; fi; done;
This bash line transforms the Nomfich_*.dat files into nomfich_*.dat
> cat somefile.txt | tr -cd [:graph:]
This line deletes all non-printable characters (good for chomping a string...)