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NAME | SYNOPSIS | DESCRIPTION | AUTHOR | REPORTING BUGS | COPYRIGHT | SEE ALSO | COLOPHON |
ENVSUBST(1) User Commands ENVSUBST(1)
envsubst - substitutes environment variables in shell format strings
envsubst [OPTION] [SHELL-FORMAT]
Substitutes the values of environment variables.
Operation mode:
-v, --variables
output the variables occurring in SHELL-FORMAT
Informative output:
-h, --help
display this help and exit
-V, --version
output version information and exit
In normal operation mode, standard input is copied to standard
output, with references to environment variables of the form
$VARIABLE or ${VARIABLE} being replaced with the corresponding
values. If a SHELL-FORMAT is given, only those environment variables
that are referenced in SHELL-FORMAT are substituted; otherwise all
environment variables references occurring in standard input are
substituted.
When --variables is used, standard input is ignored, and the output
consists of the environment variables that are referenced in
SHELL-FORMAT, one per line.
Written by Bruno Haible.
Report bugs in the bug tracker at
<https://savannah.gnu.org/projects/gettext> or by email to
<bug-gettext@gnu.org>.
Copyright © 2003-2020 Free Software Foundation, Inc. License GPLv3+:
GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
The full documentation for envsubst is maintained as a Texinfo
manual. If the info and envsubst programs are properly installed at
your site, the command
info envsubst
should give you access to the complete manual.
This page is part of the gettext (message translation) project.
Information about the project can be found at
⟨http://www.gnu.org/software/gettext/⟩. If you have a bug report for
this manual page, see ⟨http://savannah.gnu.org/projects/gettext/⟩.
This page was obtained from the tarball gettext-0.21.tar.gz fetched
from ⟨https://ftp.gnu.org/gnu/gettext/⟩ on 2020-08-13. If you dis‐
cover 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
GNU gettext-runtime 20200704 July 2020 ENVSUBST(1)
Pages that refer to this page: git-sh-i18n--envsubst(1)