gettext-runtime/man/envsubst.1

     DO NOT MODIFY THIS FILE! It was generated by help2man 1.24.
 ENVSUBST "1" "November 2007" "GNU gettext-runtime 0.17" GNU
 NAME
envsubst - substitutes environment variables in shell format strings
 SYNOPSIS
 envsubst [OPTION] [SHELL-FORMAT]
 DESCRIPTION
 Add any additional description here

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.
 AUTHOR
Written by Bruno Haible.
 "REPORTING BUGS"
Report bugs to <bug-gnu-gettext@gnu.org>.
 COPYRIGHT
Copyright \(co 2003-2007 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://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.
 "SEE ALSO"
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.