36b059748d
Documentation on "classic" commands with many sub-commands are notoriously hard to discover due to lack of overview and anchor links. Additionally the information on common options and environment variables is not accessible offline in man pages, and therefore often overlooked by readers. With this change, each sub-command of nix-store and nix-env gets its own page in the manual (listed in the table of contents), and each own man page. Also, man pages for each subcommand now (again) list common options and environment variables. While this makes each page quite long and some common parameters don't apply, this should still make it easier to navigate as that additional information was not accessible on the command line at all. It is now possible to run 'nix-store --<subcommand> --help` to display help pages for the given subcommand. Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>
34 lines
684 B
Markdown
34 lines
684 B
Markdown
# Name
|
|
|
|
`nix-env --rollback` - set user environment to previous generation
|
|
|
|
# Synopsis
|
|
|
|
`nix-env` `--rollback`
|
|
|
|
# Description
|
|
|
|
This operation switches to the “previous” generation of the active
|
|
profile, that is, the highest numbered generation lower than the current
|
|
generation, if it exists. It is just a convenience wrapper around
|
|
`--list-generations` and `--switch-generation`.
|
|
|
|
{{#include ./opt-common.md}}
|
|
|
|
{{#include ../opt-common.md}}
|
|
|
|
{{#include ./env-common.md}}
|
|
|
|
{{#include ../env-common.md}}
|
|
|
|
# Examples
|
|
|
|
```console
|
|
$ nix-env --rollback
|
|
switching from generation 92 to 91
|
|
```
|
|
|
|
```console
|
|
$ nix-env --rollback
|
|
error: no generation older than the current (91) exists
|
|
```
|