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Commands by unixmonkey8046 from sorted by
Terminal - Commands by unixmonkey8046 - 13 results
strace -ff -e trace=file my_command 2>&1 | perl -ne 's/^[^"]+"(([^\\"]|\\[\\"nt])*)".*/$1/ && print'
2011-08-16 15:00:18
Functions: perl strace
16

Can be run as a script `ftrace` if my_command is substrituted with "$@"

It is useful when running a command that fails and you have the feeling it is accessing a file you are not aware of.

parallel echo -n {}"\ "\;echo '$(du -s {} | awk "{print \$1}") / $(find {} | wc -l)' \| bc -l ::: *
while notify-send "`acpi -t`"; do sleep 300; done
2011-07-05 18:22:06
Functions: sleep
1

Use acpi and notify-send to report current temperature every five minutes.

Works best in a shell script run at startup. acpi is called for temperature and fed to notify-send for a tooltip. After waiting five minutes, it will start over.

find . -type f | parallel -j+0 grep -i foobar
2010-01-30 02:08:46
Functions: find grep
3

Parallel does not suffer from the risk of mixing of output that xargs suffers from. -j+0 will run as many jobs in parallel as you have cores.

With parallel you only need -0 (and -print0) if your filenames contain a '\n'.

Parallel is from https://savannah.nongnu.org/projects/parallel/

du -s * | sort -nr | head | cut -f2 | parallel -k du -sh
2010-01-28 12:59:14
Functions: cut du head sort
Tags: du xargs parallel
-2

If a directory name contains space xargs will do the wrong thing. Parallel https://savannah.nongnu.org/projects/parallel/ deals better with that.

tar -zcvpf backup_`date +"%Y%m%d_%H%M%S"`.tar.gz `find <target> -atime +5 -type f` 2> /dev/null | parallel -X rm -f
2010-01-28 12:41:41
Functions: rm tar
-3

This deals nicely with files having special characters in the file name (space ' or ").

Parallel is from https://savannah.nongnu.org/projects/parallel/

ls -t1 | sed 1d | parallel -X rm
2010-01-28 12:28:18
Functions: ls sed
-1

xargs deals badly with special characters (such as space, ' and "). To see the problem try this:

touch important_file

touch 'not important_file'

ls not* | xargs rm

Parallel https://savannah.nongnu.org/projects/parallel/ does not have this problem.

svn st | cut -c 9- | parallel -X tar -czvf ../backup.tgz
2010-01-28 11:43:16
Functions: cut tar
-2

xargs deals badly with special characters (such as space, ' and "). In this case if you have a file called '12" record'.

Parallel https://savannah.nongnu.org/projects/parallel/ does not have this problem.

Both solutions work bad if the number of files is more than the allowed line length of the shell.

svn status |grep '\?' |awk '{print $2}'| parallel -Xj1 svn add
2010-01-28 08:47:54
Functions: awk grep
Tags: xargs parallel
-2

xargs deals badly with special characters (such as space, ' and "). To see the problem try this:

touch important_file

touch 'not important_file'

ls not* | xargs rm

Parallel https://savannah.nongnu.org/projects/parallel/ does not have this problem.

grep -rl oldstring . | parallel sed -i -e 's/oldstring/newstring/'
2010-01-28 08:44:16
Functions: grep sed
3

xargs deals badly with special characters (such as space, ' and "). To see the problem try this:

touch important_file

touch 'not important_file'

ls not* | xargs rm

Parallel https://savannah.nongnu.org/projects/parallel/ does not have this problem.

find -not -empty -type f -printf "%s\n" | sort | uniq -d | parallel find -type f -size {}c | parallel md5sum | sort | uniq -w32 --all-repeated=separate
2010-01-28 08:40:18
Functions: find md5sum sort uniq
Tags: xargs parallel
-1

A bit shorter and parallelized. Depending on the speed of your cpu and your disk this may run faster.

Parallel is from https://savannah.nongnu.org/projects/parallel/

tar -tf <file.tar.gz> | parallel rm
2010-01-28 08:28:16
Functions: tar
-2

xargs deals badly with special characters (such as space, ' and "). To see the problem try this:

touch important_file

touch 'not important_file'

ls not* | xargs rm

Parallel https://savannah.nongnu.org/projects/parallel/ does not have this problem.

seq 1 5 | parallel ssh {}.cluster.net uptime
2010-01-28 08:18:50
Functions: seq ssh
Tags: parallel
2

Parallel is from https://savannah.nongnu.org/projects/parallel/

Other examples would be:

(echo foss.org.my; echo www.debian.org; echo www.freenetproject.org) | parallel traceroute

seq -f %04g 0 9999 | parallel -X rm pict{}.jpg