Difference between revisions of "Apropos"
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By default as of NixOS 21.05, <code>apropos</code>, <code>whatis</code> and <code>man -k</code> do not find anything when run, because the man page index cache is not generated. | By default as of NixOS 21.05, <code>apropos</code>, <code>whatis</code> and <code>man -k</code> do not find anything when run, because the man page index cache is not generated. | ||
Latest revision as of 10:58, 6 April 2024
By default as of NixOS 21.05, apropos, whatis and man -k do not find anything when run, because the man page index cache is not generated.
To generate it manually (and again to update it when new software is installed), run:
sudo mkdir -p /var/cache/man/nixos
sudo mandb
To enable automatically building the immutable cache, you can set:
documentation.man.generateCaches = true;
Note that this will rebuild the cache every time you change anything in environment.systemPackages, and will make the mandb command fail.