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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 <[email protected]>.
Copyright © 2003-2023 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-0.22.5.tar.gz fetched from
⟨https://ftp.gnu.org/gnu/gettext/⟩ on 2024-06-14. If you
discover any rendering problems in this HTML version of the page,
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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 [email protected]
GNU gettext-runtime 0.22.5 February 2024 ENVSUBST(1)
Pages that refer to this page: git-sh-i18n--envsubst(1)