NixOS Generations Trimmer: Difference between revisions
imported>Nix move to gist to deal with formatting issues |
imported>Mike1 m New confirm option added |
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* If you are a normal user, you can run on either the <code>home-manager</code> or <code>channels</code> profiles too. | * If you are a normal user, you can run on either the <code>home-manager</code> or <code>channels</code> profiles too. | ||
=== Example script output | == Script (trim-generations.sh) == | ||
The script is available here: [https://gist.github.com/MaxwellDupre/3077cd229490cf93ecab08ef2a79c852 Github Gist - NixOS: trim-generations.sh] | |||
== Example script output == | |||
=== Without parameters (defaults) === | |||
<syntaxHighlight lang=bash> | <syntaxHighlight lang=bash> | ||
❯ ./trim-generations.sh | ❯ ./trim-generations.sh | ||
oldest generation: | The current defaults are: | ||
oldest generation created: | Keep-Gens=30 Keep-Days=30 | ||
minutes before now: | |||
hours before now: | Keep these defaults? (y/n):y | ||
days before now: | Using defaults.. | ||
Keeping default: 30 generations OR 30 days, whichever is more | |||
Operating on profile: /nix/var/nix/profiles/per-user/dougal/profile | |||
oldest generation: 75 | |||
oldest generation created: 2023-08-05 | |||
minutes before now: 46740 | |||
hours before now: 779 | |||
days before now: 32 | |||
current generation: 217 | |||
current generation created: 2023-09-06 | |||
minutes before now: 660 | |||
hours before now: 11 | |||
days before now: 0 | |||
Something to do... | |||
Found the following generation(s) to delete: | |||
generation 75 2023-08-05, 32 day(s) old | |||
generation 76 2023-08-05, 32 day(s) old | |||
generation 77 2023-08-05, 32 day(s) old | |||
generation 78 2023-08-05, 32 day(s) old | |||
generation 79 2023-08-05, 32 day(s) old | |||
generation 80 2023-08-05, 32 day(s) old | |||
generation 81 2023-08-05, 32 day(s) old | |||
generation 82 2023-08-05, 32 day(s) old | |||
generation 83 2023-08-05, 32 day(s) old | |||
generation 84 2023-08-05, 32 day(s) old | |||
generation 85 2023-08-05, 32 day(s) old | |||
generation 86 2023-08-05, 32 day(s) old | |||
Do you want to delete these? [Y/n]: | |||
</syntaxHighlight> | </syntaxHighlight> | ||
=== With parameters === | |||
<syntaxHighlight lang=bash> | <syntaxHighlight lang=bash> | ||
| Line 66: | Line 93: | ||
</syntaxHighlight> | </syntaxHighlight> | ||
=== With parameters (not enough though) === | |||
Example if you accidentally don't specify all parameters / arguments. | Example if you accidentally don't specify all parameters / arguments. | ||
| Line 76: | Line 103: | ||
Usage: | Usage: | ||
./trim-generations.sh <keep-gernerations> <keep-days> <profile> | |||
(defaults are: Keep-Gens=30 Keep-Days=30 Profile=user) | |||
If you enter any parameters, you must enter all three, or none to use defaults. | |||
Example: | Example: | ||
trim-generations.sh 15 10 home-manager | |||
this will work on the home-manager profile and keep all generations from the | |||
last 10 days, and keep at least 15 generations no matter how old. | |||
Profiles available are: user, home-manager, channels, system (root) | |||
-h or --help prints this help text. | |||
</syntaxHighlight> | </syntaxHighlight> | ||
=== Run as root (default) === | |||
<syntaxHighlight lang=bash> | <syntaxHighlight lang=bash> | ||
❯ sudo ./trim-generations.sh | ❯ sudo ./trim-generations.sh | ||
Keeping default: | The current defaults are: | ||
Operating on profile: | Keep-Gens=30 Keep-Days=30 | ||
Keep these defaults? (y/n):y | |||
Using defaults.. | |||
Keeping default: 30 generations OR 30 days, whichever is more | |||
Operating on profile: /nix/var/nix/profiles/system | |||
oldest generation: | oldest generation: 65 | ||
oldest generation created: | oldest generation created: 2023-08-05 | ||
minutes before now: | minutes before now: 46727 | ||
hours before now: | hours before now: 778 | ||
days before now: | days before now: 32 | ||
current generation: | current generation: 102 | ||
current generation created: | current generation created: 2023-09-04 | ||
minutes before now: 3527 | |||
hours before now: 58 | |||
days before now: 2 | |||
All generations are no more than | All generations are no more than 30 days older than current generation. | ||
Oldest gen days difference from current gen: | Oldest gen days difference from current gen: 30 | ||
Nothing to do! | |||
</syntaxHighlight> | </syntaxHighlight> | ||
=== Run as root (on system profile) === | |||
<syntaxHighlight lang=bash> | <syntaxHighlight lang=bash> | ||
| Line 129: | Line 169: | ||
</syntaxHighlight> | </syntaxHighlight> | ||
=== Run as root (wrong profile) === | |||
Example if you accidentally give wrong profile (no home-manager on root): | Example if you accidentally give wrong profile (no home-manager on root): | ||
| Line 139: | Line 179: | ||
Usage: | Usage: | ||
./trim-generations.sh <keep-gernerations> <keep-days> <profile> | |||
(defaults are: Keep-Gens=30 Keep-Days=30 Profile=user) | |||
If you enter any parameters, you must enter all three, or none to use defaults. | |||
Example: | Example: | ||
trim-generations.sh 15 10 home-manager | |||
this will work on the home-manager profile and keep all generations from the | |||
last 10 days, and keep at least 15 generations no matter how old. | |||
Profiles available are: user, home-manager, channels, system (root) | |||
-h or --help prints this help text. | |||
</syntaxHighlight> | </syntaxHighlight> | ||
[[Category:Tutorial]] | |||