1. Tutorial http://www.passwordstore.org/
2. Man http://git.zx2c4.com/password-store/about/

Install from Slackbuilds:

password-store
  xclip
  pwgen

Create a GPG key called eg. „Beckis Password Storage Key“ with a strong password.
Then init pass:

pass init "Beckis Password Storage Key"

The name of the key will appear in ~/.password-store/.gpg-id
Then initialize the password store as a git repository:

pass git init

pass help

pass
Password Store
`-- Hugo

$ pass Hugo
Habicht
$ pass -c Hugo
Copied Hugo to clipboard. Will clear in 45 seconds.

$ pass insert ebay

$ pass mv

$ pass rm
$ pass cp

First you need to (git-)clone your ~/.password-store git-repo to the other computer(s). You will use use standard git commands clone, pull and push to syncronize the reopos. See Git Tips

Second you need to export the private gpg-key which you use to access the passwords and import it on the other computers. See exportimport_keys

-c Include  at  least  one capital letter
-n Include at least one number
-s Generate completely random, hard-to-memorize  passwords
-y Include at least one special character

Generate memorizable passwords containing a special character with a length of 9 characters. Secure and usable:

pwgen -y 9

Generate 4 very secure passwords containing special characters with a length of 13 characters. Useful only for copy & paste:

pwgen -sy 13 4

Generate 4 very secure passwords with a length of 13 characters. Useful only for copy & paste:

pwgen -s 13 4

Generate 6 easy to memorize passwords with a length of 9 characters:

pwgen -nc 9 6