Commands by Alioth

Commands by Alioth (2)

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Rsync remote data as root using sudo

If your user has sudo on the remote box, you can rsync data as root without needing to login as root. This is very helpful if the remote box does not allow root to login over SSH (which is a common security restriction).
This is sample output - yours may be different.
18

rsync --rsync-path 'sudo rsync' username@source:/folder/ /local/

Alioth · 2009-03-25 21:18:55 11
Find all directories on filesystem containing more than 99MB

Finds all directories containing more than 99MB of files, and prints them in human readable format. The directories sizes do not include their subdirectories, so it is very useful for finding any single directory with a lot of large files. Show Sample Output
This is sample output - yours may be different.
```
150M    /home/jharvey/scratch
100M    /home/jharvey
567M    /home/jdoe/migration
```
6

du -hS / | perl -ne '(m/\d{3,}M\s+\S/ || m/G\s+\S/) && print'

Alioth · 2009-03-25 18:06:53 5

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shuffle lines via perl

Same, without modules... Probably smarter option: just use the shuf command or even sort -R.

Convert Squid unixtime logs in human-readable ones

On-the-fly conversion of Unix Time to human-readable in Squid's access.log

Rename files in batch

parrallel execution of a command on remote hosts by ssh or rsh or ...

parrallel execution of a command on remote host by ssh or rsh or ... very useful for cluster management (software update)

save date and time for each command in history

Date-time format: YYYY-MM-DD HH:MM:SS

Print environment information.

Print environment (system) information using Perl.

Save a file you edited in vim without the needed permissions

I often forget to sudo before editing a file I don't have write permissions on. When you come to save that file and get the infamous "E212: Can't open file for writing", just issue that vim command in order to save the file without the need to save it to a temp file and then copy it back again.

Make a zip file with date/time created in the name of the file , zip all sub-directorys

zip -r /tmp/filename-`date +%Y%m%d_%H%M%S`.zip /directory/

HTML5 ogg player

find OGG audio files on your *nix box and listen to them using your web browser

Change host name

With sed you can replace strings on the fly.

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