dirty rotten password manager

gistfile1.txt

$ cat >~/bin/mypass
#!/bin/bash

if [[ $# -ne 1 ]]; then echo "Usage: $(basename $0) <site>" && exit 2; fi
(gpg -q -d ~/.passwd.gpg; echo "$1") | sha256sum | cut -c-16
^D

$ gpg --default-recipient-self -e >~/.passwd.gpg
<your password here>^D^D

$ chmod +x ~/bin/mypass

$ mypass google.com
...

$ mypass facebook.com
...

$ mypass americanexpress.com
...

$ cat >/dev/null
now change all your passwords and stop worrying about it.

note that I don't have a good solution for your phone, but
http://www.xorbin.com/tools/sha256-hash-calculator is a
decent online sha256 calculator you can use in a pinch.

replace `sha256sum' with `shasum -a 256' on osx.

combine with pbcopy or xclip for extra delicious!^D