rename file name with fixed length nomeric format pattern Show Sample Output

The result of this command is a tar with all files that have been modified/added since revision 1792 until HEAD. This command is super useful for incremental releases.

for when find . -print | grep -v .svn | xargs doesnt cut it.

Deletes capistrano-style release directories (except that there are dashes between the YYYY-MM-DD) Show Sample Output

One of my friends committed his code in the encoding of GB2312, which broke the build job. I have to find his code and convert.

If you have the fdupes command, you'll save a lot of typing. It can do recursive searches (-r,-R) and it allows you to interactively select which of the duplicate files found you wish to keep or delete.

Take a folder full of files and split it into smaller folders containing a maximum number of files. In this case, 100 files per directory. find creates the list of files xargs breaks up the list into groups of 100 for each group, create a directory and copy in the files Note: This command won't work if there is whitespace in the filenames (but then again, neither do the alternative commands :-)

same as grep -lL "foo" $(grep -l bar *cl*.log)

Uses xargs to call the second grep with the first grep's results as arguments

recursively search dir for a a particular file type, search each file for a particular text. Show Sample Output

If you want to pull all of the files from a tree that has mixed files and directories containing files, this will link them all into a single directory. Beware of filesystem files-per-directory limits.

unset PROMPT_COMMAND to disable. Show Sample Output

Increase the modification date for the files selected with the find command.

Grabs the cmdline used to execute the process, and the environment that the process is being run under. This is much different than the 'env' command, which only lists the environment for the shell. This is very useful (to me at least) to debug various processes on my server. For example, this lets me see the environment that my apache, mysqld, bind, and other server processes have. Here's a function I use: aa_ps_all () { ( cd /proc && command ps -A -opid= | xargs -I'{}' sh -c 'test $PPID -ne {}&&test -r {}/cmdline&&echo -e "\n[{}]"&&tr -s "\000" " "<{}/cmdline&&echo&&tr -s "\000\033" "\nE"<{}/environ|sort&&cat {}/limits' ); } From my .bash_profile at http://www.askapache.com/linux-unix/bash_profile-functions-advanced-shell.html Show Sample Output

This can be useful for transforming command-line args into input for xargs (one per line). This can also be done with ls if the args are filenames, but that's getting awfully close to Useless Use of Cat territory (http://partmaps.org/era/unix/award.html).

Similar to xargs -i, but works with builtin bash commands (rather than running "bash -c ..." through xargs)

Preserve file structure when coping and exclude some file o dir patterns Show Sample Output

Convert all jpegs in the current directory into ~1024*768 pixels and ~ 150 KBytes jpegs