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Install pip with Proxy
Installs pip packages defining a proxy

send a circular
don't need echo :P

Random numbers with Ruby
There's been a few times I've needed to create random numbers. Although I've done so in PERL, I've found Ruby is actually faster. This script generates 20 random "10" digit number NOT A RANDOM NUMBER. Replace 20 (1..20) with the amount of random numbers you need generated

Show all listening and established ports TCP and UDP together with the PID of the associated process
Easy to remenber. Fot TCP only use: netstat -plant

Get full from half remembered commands
Show all commands having the part known by you. Eg: $apropos pdf | less

run command on a group of nodes in parallel
Parallel is from https://savannah.nongnu.org/projects/parallel/ Other examples would be: (echo foss.org.my; echo www.debian.org; echo www.freenetproject.org) | parallel traceroute seq -f %04g 0 9999 | parallel -X rm pict{}.jpg

list block devices
Shows all block devices in a tree with descruptions of what they are.

Find the package that installed a command

Replace all forward slashes with backward slashes
Use -i option to edit directly a file: sed -i 's|\/|\\|g' file

Git diff last two commits
How about this one ?


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