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Fix the vi zsh bindings on ubuntu
Use sed to comment out any up/down bindings in zsh

Sort and count subjects of emails stuck in Exim queue

grep tab (\t)
works in bash

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

Change host name
With sed you can replace strings on the fly.

Rapidly invoke an editor to write a long, complex, or tricky command

save man-page as pdf

Ask for a password, the passwd-style
You can ask repeatedly for a non-blank password using this function: function read_password() { while [ ! -n "$USER_PASSWORD" ]; do read -s -p"Password: " USER_PASSWORD if [ ! -n "$USER_PASSWORD" ]; then echo "ERROR: You must specify a valid password, please try again" fi echo done } Also you can set a time out (in seconds) to write the password read -t 10 -s -p"Password: " USER_PASSWORD_VARIABLE if [ ! $? -eq 0 ]; then echo "Time out!" fi

Print only the odd lines of a file
NR%2 == 1 on odd lines and 0 on even lines

do 'foo' until it exits successfully, pausing in between crashes
restart a buggy script when it dies. works great for "git svn fetch", which leaks memory like a sieve and eventually dies...making you restart it.


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