keep

keep is a rudimentary cache for expensive commands.

• Simple to use: Just prefix any command with keep.
• Request debouncing: A command called from multiple processes simultaneously is executed only once.
• Time-to-live: Specify a maximum age for recalling command output.
• Private: Cached outputs are owned by, and may only be read by, the originating user[^1].

[^1]: Restrictive file permissions are smart, but not inherently secure; this utility would be unsuitable for keeping highly-sensitive data or for use outside local development.

keep --ttl 5m curl https://example.com/slow-resource

Installation

Only Linux (or Windows Subsystem for Linux), and macOS are supported.

1. Go 1.20+ (https://go.dev/dl/)
2. Add ~/go/bin to PATH
3. go install github.com/credding/keep@latest

Usage

Usage: keep [OPTION]... [--] COMMAND [ARG]...
Save the output of a command for recall later.
      --ttl duration   time to remember command output (default 1h0m0s)
  -h, --help           display this help message

Internals

Cached outputs are saved in $XDG_STATE_HOME/keep, or ~/.local/state/keep.