passman -- simple password manager
It stores passwords in single recfile
(https://www.gnu.org/software/recutils/), that is by default encrypted
by age (https://github.com/FiloSottile/age) with the passphrase and
compressed by zstd.

* passman add NAME [PASSWORD]
  Appends NAME credential with optional password to the database. If
  password is not provided, then it will be autogenerated.
* passman has NAME
  Just returns if specified credential exists.
* passman gen
  Prints autogenerated password.
* passman mod
  Decrypts whole database to temporary file and runs editor on it.
* passman NAME
  Search for specified credential. That can be regexp. If more than
  single entity is found, then print found names. If single entity is
  found, then its basename (last part after the slash) is copied to
  primary X11 buffer, and password is copied to clipboard buffer. Then
  sleep for ten seconds and clear the clipboard.