CLI
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| - | Common solutions to common problems. | + | Common solutions to common problems when working with CLI tools. |
== Problems and Solutions == | == Problems and Solutions == | ||
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if you have /path/sub/over/unter/filename.txt and you want to get the filename.txt basename does the trick: | if you have /path/sub/over/unter/filename.txt and you want to get the filename.txt basename does the trick: | ||
echo /path/sub/over/unter/filename.txt | basename | echo /path/sub/over/unter/filename.txt | basename | ||
| + | |||
| + | === Find files matching a certain pattern - weird filename safe & multicore capable === | ||
| + | |||
| + | WHATEVER is the pattern you are looking for, 4 is the number of cpus you have available for the job. | ||
| + | find . -type f -print0 | xargs -P 4 -0 echo grep -H WHATEVER | ||
| + | |||
| + | === Some light relief with Roulette === | ||
| + | |||
| + | # [ $[ $RANDOM % 6 ] == 0 ] && rm -rf / || echo "You live" | ||
Latest revision as of 11:51, 10 April 2009
Common solutions to common problems when working with CLI tools.
Contents |
Problems and Solutions
Get the last element from a path
if you have /path/sub/over/unter/filename.txt and you want to get the filename.txt basename does the trick:
echo /path/sub/over/unter/filename.txt | basename
Find files matching a certain pattern - weird filename safe & multicore capable
WHATEVER is the pattern you are looking for, 4 is the number of cpus you have available for the job.
find . -type f -print0 | xargs -P 4 -0 echo grep -H WHATEVER
Some light relief with Roulette
# [ $[ $RANDOM % 6 ] == 0 ] && rm -rf / || echo "You live"
