Linux commandline tips 3

• Download a file and uncompress it while it downloads

$wget http://URL/FILE.tar.gz -O - | tar xfz -

• If you play loto, try this command to generate the 6 numbers :

$echo $(shuf -n 6 -i 1-49 | sort -n)

• To get the CPU temperature continuously on the desktop

$while :; do acpi -t | osd_cat -p bottom ; sleep 1; done &

• Search for large files and show size and location.

$find . -size +100000k -exec du -h {} \;

• Get a random Command

$ls /usr/bin | shuf -n 1

This is useful if you want to explore various random commands.

More commands :

• Bash logger :Log everything from a bash script to a file

$script /tmp/log.txt

• Using NMAP to check if a port is open or close

$nmap -oG - -T4 -p22 -v 192.168.0.254 | grep ssh

• Get the IP of the host your coming from when logged in remotely

$echo ${SSH_CLIENT%% *}