If you’re new or relatively inexperienced to Linux development youll find the stuff below useful:
Backup - an important thing to do if you want to keep your work safe. A usefull little script is the following (thnx to mgillespie from plugcomputer.org)
#!/bin/bash
DIR=/usb/DataBackups/SheevaRootFS/$(date +%Y%m%d)/
mkdir $DIR
dpkg -l |grep ‘^ii’ > $DIR/InstalledPackages.txt
tar cjf /$DIR/backup.tar.bz2 –exclude=/usb –exclude=/lost+found –exclude=/proc –exclude=/dev –exclude=/sys /
which you can save as /etc/cron.monthly/backup.sh
and give it execute permissions by doing
chmod +x /etc/cron.monthly/backup.sh
this works just fine 
Handling space – another important thing to watch out for, especially for a machine with barely half a gig of memory.
df -h –t=rootfs
will give you usage info (two – in front of t)
while
apt-get clean
and
apt-get autoremove
will help free up space. More tips at the plugwiki of plugcomputer.org
Extracting – most of the stuff for the plug is downloaded in a compressed format.
for .bz2
bunzip {filename}
for .tar.bz2
tar xjvf
for .tar.tgz or .tgz
gunzip < {filename} | tar xvf -
and with .tar its
tar xvf {filename}
filenames above without { }
Useful stuff
nano – a friendly to use file editor
wget - downloads files from websites
cron - event scheduler
install above via apt-get install {name}
