Difference between revisions of "Envsubst"
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↑ https://aws.amazon.com/blogs/containers/start-pods-faster-by-prefetching-images/
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Revision as of 15:59, 6 February 2024
Usage: 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.
Report bugs in the bug tracker at <https://savannah.gnu.org/projects/gettext>
or by email to <[email protected]>.
envsubst < cluster-config.yaml | eksctl create cluster -f - [1]
See also
- Variables: Environment variables,
env,env-cmd,.env/,SHELL,PS1, HOME, $?,PATH,HISTFILE, PWD, LD_LIBRARY_PATH,printenv, getenv, getenv, direnv, AWS cli environmental variables, envsubst,env:, env_file(docker-compose) gettext, envsubst- Variables: Environment variables,
env,env-cmd,.env/,SHELL,PS1, HOME, $?,PATH,HISTFILE, PWD, LD_LIBRARY_PATH,printenv, getenv, getenv, direnv, AWS cli environmental variables, envsubst,env:, env_file(docker-compose)
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