nix-store:tldr:7bbfe

The command du -cLsh $(nix-store --query --references ${-nix-store----}) is a complex command that is composed of two parts: du and nix-store.

1. du command:

   • du is a Linux command used to estimate file and directory space usage.
   • The options used in this command are as follows:
     • -c or --total: Display a grand total.
     • -L or --dereference: Dereference all symbolic links, showing the disk usage of the files they point to instead of reporting the disk usage of the symbolic links themselves.
     • -s or --summarize: Display only a total for each specified file.
     • -h or --human-readable: Print sizes in human-readable format (e.g., 1K, 234M, 2G).

2. nix-store command:

   • nix-store is a tool from the Nix package manager that manages binary packages.
   • The options used in this command are as follows:
     • --query --references: Query the Nix store to find all the references to a given path or hash.
     • ${-nix-store----}: It is a placeholder that should be replaced with the path or hash of a package in the Nix store.

Overall, the command du -cLsh $(nix-store --query --references ${-nix-store----}) combines these two commands. It queries the Nix store for all references to a specific package and then uses du to estimate the disk usage of all the files that are referenced by that package. The -cLsh options of du ensure that the disk usage is displayed in a summarized, human-readable format, and a grand total is provided at the end.