these are a list with more complex commands i regularly use with a description of what it does
execute the last command but with sudo priveliges
sudo !!
download the entire site www.example.com as it is presented to an anonymous user using a mozilla browser
wget --random-wait -r -p -e robots=off -U mozilla http://www.example.com
get stats on the network-speed to a host
mtr hostname
twitter from command line (very usefull to keep track of machines)
this twitters the output of the command "uptime"
curl -u mytwitterusername:mypassword -d status="my uptime:`uptime`" http://twitter.com/statuses/update.json
more info here: http://mark.koli.ch/2009/05/howto-tweet-from-the-command-line-with-curl.html
enable passwordless ssh the easy way
ssh-copy-id user@remote-machine
make shift alarm clock
sleep 8h; cat /dev/urandom > /dev/dsp
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