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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLES | EXIT STATUS | SEE ALSO | COLOPHON |
SYSTEMD-ESCAPE(1) systemd-escape SYSTEMD-ESCAPE(1)
systemd-escape - Escape strings for usage in systemd unit names
systemd-escape [OPTIONS...] [STRING...]
systemd-escape may be used to escape strings for inclusion in systemd
unit names. The command may be used to escape and to undo escaping of
strings.
The command takes any number of strings on the command line, and will
process them individually, one after another. It will output them
separated by spaces to stdout.
By default, this command will escape the strings passed, unless
--unescape is passed which results in the inverse operation being
applied. If --mangle is given, a special mode of escaping is applied
instead, which assumes the string is already escaped but will escape
everything that appears obviously non-escaped.
For details on the escaping and unescaping algorithms see the
relevant section in systemd.unit(5).
The following options are understood:
--suffix=
Appends the specified unit type suffix to the escaped string.
Takes one of the unit types supported by systemd, such as
"service" or "mount". May not be used in conjunction with
--template=, --unescape or --mangle.
--template=
Inserts the escaped strings in a unit name template. Takes a unit
name template such as foobar@.service. With --unescape, expects
instantiated unit names for this template and extracts and
unescapes just the instance part. May not be used in conjunction
with --suffix=, --instance or --mangle.
--path, -p
When escaping or unescaping a string, assume it refers to a file
system path. This eliminates leading, trailing or duplicate "/"
characters and rejects "." and ".." path components. This is
particularly useful for generating strings suitable for
unescaping with the "%f" specifier in unit files, see
systemd.unit(5).
--unescape, -u
Instead of escaping the specified strings, undo the escaping,
reversing the operation. May not be used in conjunction with
--suffix= or --mangle.
--mangle, -m
Like --escape, but only escape characters that are obviously not
escaped yet, and possibly automatically append an appropriate
unit type suffix to the string. May not be used in conjunction
with --suffix=, --template= or --unescape.
--instance
With --unescape, unescape and print only the instance part of an
instantiated unit name template. Results in an error for an
uninstantiated template like ssh@.service or a non-template name
like ssh.service. Must be used in conjunction with --unescape and
may not be used in conjunction with --template.
-h, --help
Print a short help text and exit.
--version
Print a short version string and exit.
To escape a single string:
$ systemd-escape 'Hallöchen, Meister'
Hall\xc3\xb6chen\x2c\x20Meister
To undo escaping on a single string:
$ systemd-escape -u 'Hall\xc3\xb6chen\x2c\x20Meister'
Hallöchen, Meister
To generate the mount unit for a path:
$ systemd-escape -p --suffix=mount "/tmp//waldi/foobar/"
tmp-waldi-foobar.mount
To generate instance names of three strings:
$ systemd-escape --template=systemd-nspawn@.service 'My Container 1' 'containerb' 'container/III'
systemd-nspawn@My\x20Container\x201.service systemd-nspawn@containerb.service systemd-nspawn@container-III.service
To extract the instance part of an instantiated unit:
$ systemd-escape -u --instance 'systemd-nspawn@My\x20Container\x201.service'
My Container 1
To extract the instance part of an instance of a particular template:
$ systemd-escape -u --template=systemd-nspawn@.service 'systemd-nspawn@My\x20Container\x201.service'
My Container 1
On success, 0 is returned, a non-zero failure code otherwise.
systemd(1), systemd.unit(5), systemctl(1)
This page is part of the systemd (systemd system and service manager)
project. Information about the project can be found at
⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have a bug
report for this manual page, see
⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩. This
page was obtained from the project's upstream Git repository
⟨https://github.com/systemd/systemd.git⟩ on 2020-08-13. (At that
time, the date of the most recent commit that was found in the repos‐
itory was 2020-08-11.) If you discover any rendering problems in
this HTML version of the page, or you believe there is a better or
more up-to-date source for the page, or you have corrections or
improvements to the information in this COLOPHON (which is not part
of the original manual page), send a mail to man-pages@man7.org
systemd 246 SYSTEMD-ESCAPE(1)
Pages that refer to this page: systemd.unit(5) , 30-systemd-environment-d-generator(7) , systemd.directives(7) , systemd.index(7)