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BASH: rename files

antonio lorusso — Fri, 26 Feb 2010 11:46:38 +0000

A simple rename example using again the mighty awk and xargs
ls -l *.xml | awk '{print $9}' | xargs -t -i mv {} {}.old

Explanation:
ls -l *.xml -> easy! list the xml files in a folder
awk '{print $9}' -> output just the name of the file
xargs -t -i mv {} {}.old -> rename it adding at the same filename the extension “.old”

I know, I know … my explanation is crap: blame my laziness

disable Pure-ftpd logging on syslog

antonio lorusso — Sat, 06 Feb 2010 14:33:04 +0000

Pure-ftpd is a bit tricky to configure because do not handle the configuration like any other daemon in Linux so you will not find any /etc/pure-ftpd.conf.

According to the pure-ftpd documentation, you should start the daemon already with the options you need. The default Ubuntu installation, use the files in /etc/pure-ftpd/conf/ to set the options for the startup script of pure-ftpd so, to disable the logging, execute the following command in your shell and restart the daemon
$ echo "none" > /etc/pure-ftpd/conf/SyslogFacility $ /etc/init.d/pure-ftpd-mysql restart

svn revert cleanup

antonio lorusso — Fri, 26 Jun 2009 12:17:27 +0000

You have reverted an svn merge and you have a lot of files not tracked (with exclamation mark, basically)?
Clean it up:
svn status | awk '$1 == "?" {print $2}' | xargs -t -i rm -r {}
Again, knowing awk and xargs turn helpful!

bash: mv files with a specific date to another directory

antonio lorusso — Sat, 06 Jun 2009 14:13:33 +0000

I was searching for a bash command to move files and directories from a folder to another with modified in a specific date for ages on google until I gave up and decided to write it myself:
ls -l | awk '$6 == "2009-06-04" { print $8 }' | xargs -t -i mv {} /destination/folder
To understand what this line does, you need to know a bit about awk and xargs (try “man xargs” in your shell)

Explaination:

ls -l : directory listing
awk ‘$6 == “2009-06-04″ { print $8 } : take the files and dir with date 2009-06-04 and print the list
xargs -t -i mv {} /destination/folder : execute the mv command. {} is the result from the previous command.

I would like to explain you more, but I’m quite lazy and I leave you with google to undestand better the commands I’ve used.

Have fun!

ignore .DS_Store forever in GIT

antonio lorusso — Sun, 08 Mar 2009 23:56:25 +0000

With a couple of little commands, you’ll be able to ignore the .DS_Store files forever from your git repositories on mac!

The following command will add the .gitignore file to the git configuration
git config --global core.excludesfile ~/.gitignore

then, the following, will add the .DS_Store to the list

echo .DS_Store >> ~/.gitignore

and voilà!

proper nfs umount

antonio lorusso — Wed, 09 Jul 2008 10:09:53 +0000

if you try to umount an NFS mountpoint this way
root:~> umount /mountpoint
and your shell answer this way
umount: /mountpoint: device is busy umount: /mountpoint: device is busy
then try killing all processes using the mountpoint and update the nfs export fs
root:~> fuser -k -m /mountpoint root:~> exportfs -au
at this point, you can safely umount
root:~> umount /mountpoint

peace!