Syntax

• start something in X windows via ssh - (command issued remotely, runs AND displays at server side - not tunneled / forwarded)

#export DISPLAY=0:0
#runmycommand &

commands

• sed commands and examples

lame - downsamplig

Lame - downsampling mp3's for upload on a space challanged player

user@zubuntu:~/downsample$ cat lame_me.sh
#!/bin/bash
FILES=incoming/*mp3;
for f in $FILES;
do
echo "doing $f";
lame  --mp3input -b 32 "$f" "$f.ds.mp3"
echo "done $f";
cp "$f.ds.mp3" outgoing/
done

iptables

iptables -F                                    # flushing
iptables -N SSH                                # creating named chain
iptables -A SSH -s 122.133.144.0/24 -j ACCEPT  # 
iptables -A INPUT -p tcp --dport 22 -j SSH     #
iptables -A SSH -j DROP                        #
iptables -L                                    # listing
iptables-save > a                              #

route

The following command forces the system to reread /etc/fstab and mount all the file systems:

/usr/sbin/mount -a

____________

linux temperature software - search for 'lm_sensors'

_____________

to convert avi for upload on http://video.google.com

mencoder beer.avi -o test.avi -ovc lavc -oac mp3lame -lavcopts acodec=mp3 -ffourcc DX50

to enable / disable gateway on win2003 using netsh scripts

online.bat

netsh interface ip set address lanko source=static 192.168.100.14 255.255.255.0 192.168.100.1 1

offline.bat

netsh interface ip delete address "lanko"  gateway=all