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Backports of patch from systemd git to stable distributions
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anarcat f7d1325f3c man/shutdown: document how to switch to single-user mode
Before Debian switched to systemd, `shutdown now` would reset the system into
single user mode, doing roughly the equivalent of `telinit 1`.

Now, systemd's `shutdown` command does not behave that way; it defaults to
`poweroff` which might be confusing for users (like me) used to the previous
method.

Because I don't use the command often, I keep being stumped by this behavior,
and every time I look at the `shutdown(1)` manpage, I don't understand why I
can't find what I am looking for. This patch should make sure that people like
me find their way back to some sort of reason.

Maybe the *proper* way to fix this would be to restore the more classic
behavior, but I'm definitely not going to climb that hill. Besides, I clearly
remember the time I found out about the `shutdown` command and was *really*
confused when it brought me back to a command-line prompt. That was really
counter-intuitive and I find that change to actually be a good thing. So I'm
not proposing to change this behavior, merely document it better.

I originally added this to the `-P` option but it was suggested adding a new
`COMPATIBILITY` section instead, where other such issues could be added.

The `COMPATIBILITY` section is not actually officially documented. `man(1)`
talks about a `CONFORMING TO` section, but `shutdown(1)` is not
POSIX (`shutdown(2)` is, of course), so there's no actual standard on how this
should work.

The other option I considered was to add a `BUGS` section, but that seemed to
inflammatory, and definitely counter-productive.

(cherry picked from commit 9aafd310cc)
(cherry picked from commit 78a8e938e4)
2022-11-04 13:09:20 +01:00
.github mkosi: Remove Arch nspawn workaround 2022-03-05 21:03:32 +00:00
.lgtm/cpp-queries ci: pack-ify our custom CodeQL queries and enable them in Actions 2021-12-07 14:57:09 +01:00
.semaphore semaphoreci: move runner from Bionic to Focal 2022-04-29 00:13:13 +01:00
catalog meson: do not use split() in file lists 2022-03-05 21:03:32 +00:00
coccinelle Change all fixed-path bash shebangs to /u/b/env bash outside test/ 2021-12-12 21:13:50 +01:00
docs docs: swap Name and Partition Type UUID in header 2022-03-05 21:03:32 +00:00
factory/etc pam: fix typo try_authtok → use_authtok 2021-05-12 12:14:17 +02:00
hwdb.d hwdb: analyzers: remove generic "STM Device in DFU Mode" 2022-07-13 13:15:56 +02:00
LICENSES licensing: add a license file for the fonts we carry 2021-10-18 09:43:18 +02:00
man man/shutdown: document how to switch to single-user mode 2022-11-04 13:09:20 +01:00
mkosi.default.d mkosi: drop libiptc from build for Fedora 2022-05-26 12:36:33 +01:00
modprobe.d meson: install the right README file in modprobe.d 2021-07-07 14:52:05 +02:00
network network: dhcp-pd: add 6rd support 2021-12-07 20:33:16 +09:00
po Update LINGUAS (#21499) 2021-11-25 20:24:00 +09:00
presets units: enable systemd-network-generator by default 2021-12-16 09:49:39 +01:00
rules.d udev: support by-path devlink for multipath nvme block devices 2022-11-04 13:02:21 +01:00
shell-completion shell-completion: drop unused $mode 2022-11-04 13:02:21 +01:00
src repart: always honour --discard=no 2022-11-04 13:09:20 +01:00
sysctl.d build: preserve correct mode when generating files via jinja2 2021-11-08 12:06:48 +00:00
sysusers.d sysusers: avoid creating spurious "nobody" group 2021-11-30 16:16:25 +01:00
test integritysetup: do not use crypt_init_data_device after crypt_init 2022-11-04 13:02:20 +01:00
tmpfiles.d tmpfiles: split out config for systemd-resolve 2021-11-16 16:56:08 +01:00
tools docs: swap Name and Partition Type UUID in header 2022-03-05 21:03:32 +00:00
units units: prolong the stop timeout for homed 2022-11-04 13:02:21 +01:00
xorg xorg/50-systemd-user: add a full license header 2021-10-01 14:45:00 +02:00
.clang-format clang-format: we actually typically use 16ch continuation indentation 2022-03-05 21:03:32 +00:00
.ctags editors: Prevent ctags from following symlinks 2019-02-15 11:01:20 -08:00
.dir-locals.el scripts: use 4 space indentation 2019-04-12 08:30:31 +02:00
.editorconfig editorconfig: set maximum line length to 109 for man/*.xml files 2021-09-30 13:45:34 +02:00
.gitattributes gitattributes: introduce and use "generated" attribute 2021-10-18 09:42:55 +02:00
.gitignore emacs: ignore .dir-locals-2.el (personal customization) versioning 2022-07-13 13:30:44 +02:00
.lgtm.yml ci: add a missing SPDX header 2021-12-07 14:15:04 +01:00
.mailmap mailmap: two more names 2021-03-30 13:17:58 +02:00
.packit.yml packit: drop bfq patch 2022-04-02 01:56:36 +09:00
.vimrc scripts: use 4 space indentation 2019-04-12 08:30:31 +02:00
.ycm_extra_conf.py ycm: add doc string for all the functions in configuration file 2017-11-29 13:21:49 -07:00
configure tools: shellcheck-ify tool scripts 2021-09-30 12:27:06 +02:00
LICENSE.GPL2 relicense to LGPLv2.1 (with exceptions) 2012-04-12 00:24:39 +02:00
LICENSE.LGPL2.1 licence: remove references to old FSF address 2012-12-17 11:41:31 +01:00
Makefile tree-wide: add spdx header on all scripts and helpers 2021-01-28 09:55:35 +01:00
meson_options.txt boot, meson: allow statically linked build 2021-12-14 09:58:27 +09:00
meson.build meson: add libatomic dependency 2022-11-04 13:02:21 +01:00
mkosi.build ci: check for failed services after boot 2021-12-10 10:25:43 +01:00
mkosi.postinst ci: check for failed services after boot 2021-12-10 10:25:43 +01:00
NEWS NEWS: adjust links to moved pages 2022-01-12 22:10:30 +01:00
README meson: Drop required libfdisk version to 2.32 2022-03-05 21:03:32 +00:00
README.md Fix loading of graphs 2021-12-14 15:27:25 +09:00
TODO docs: use https:// for fd.o links 2022-01-12 22:10:51 +01:00

Systemd

System and Service Manager

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Details

Most documentation is available on systemd's web site.

Assorted, older, general information about systemd can be found in the systemd Wiki.

Information about build requirements is provided in the README file.

Consult our NEWS file for information about what's new in the most recent systemd versions.

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Stable branches with backported patches are available in the stable repo.