Difference between revisions of "Tr"
From MohidWiki
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>for i in `find | grep Nomfich`; do j=`echo $i | tr [Nom] [nom]`; if [ $i != $j ]; then mv $i $j; fi; done; | >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'' | This bash line transforms the ''Nomfich_*.dat'' files into ''nomfich_*.dat'' | ||
| + | |||
| + | > cat somefile.txt | tr -cd [:graph:] | ||
| + | The above command deletes all non-printable characters (good for chomping a string...) | ||
> tr -d "\r\n" file1 | > tr -d "\r\n" file1 | ||
| − | + | The above command joins all lines from text input. | |
[[Category:Technology]] | [[Category:Technology]] | ||
[[Category:Linux]] | [[Category:Linux]] | ||
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Revision as of 14:52, 27 April 2010
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:]
The above command deletes all non-printable characters (good for chomping a string...)
> tr -d "\r\n" file1
The above command joins all lines from text input.
