tldr/pages/common/nh-clean.md

nh clean

Clean Nix profiles and delete unused and unreachable Nix store paths. Generations can be listed using nix-env --list-generations or nh os info. More information: https://github.com/nix-community/nh#usage.

• Ask for clean up plan confirmation, clean all profiles and collect garbage:

nh clean all {{[-a|--ask]}}

• Keep a specified number of the most recent profiles for the current user and clean the remaining profiles:

nh clean user {{[-k|--keep]}} {{number}}

• Clean a specific profile and collect garbage:

nh clean profile {{path/to/profile}}