once

README

once

Run the provided command at most once at a time when ran concurrently.

Usage

$ once --help

Usage:
  once [flags] <command> [arguments]

The provided command is ran as provided to once with a file-backed mutex
to ensure that other instances of once do not run the same command+args
combination at the same time. When another instance of once fails to lock
the mutex, it will wait until the lock is released. Locks are created
using a hashed version of the command+args to prevent leaking
information about the command being ran.

Flags:
  -h, --help   help for once

Lock Information

Locks are stored at $XDG_CACHE_HOME/once. If XDG_CACHE_HOME is not set, the user's home directory is used plus .cache.

Example: $HOME/.cache/once/<sha512>.lock

License

GPL-3.0