1ENVSUBST(1)                           GNU                          ENVSUBST(1)
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NAME

6       envsubst - substitutes environment variables in shell format strings
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SYNOPSIS

9       envsubst [OPTION] [SHELL-FORMAT]
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DESCRIPTION

12       Substitutes the values of environment variables.
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14   Operation mode:
15       -v, --variables
16              output the variables occurring in SHELL-FORMAT
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18   Informative output:
19       -h, --help
20              display this help and exit
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22       -V, --version
23              output version information and exit
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25       In  normal operation mode, standard input is copied to standard output,
26       with references to environment  variables  of  the  form  $VARIABLE  or
27       ${VARIABLE}  being replaced with the corresponding values.  If a SHELL-
28       FORMAT is given, only those environment variables that  are  referenced
29       in  SHELL-FORMAT  are  substituted; otherwise all environment variables
30       references occurring in standard input are substituted.
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32       When --variables is used, standard input is  ignored,  and  the  output
33       consists of the environment variables that are referenced in SHELL-FOR‐
34       MAT, one per line.
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AUTHOR

37       Written by Bruno Haible.
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REPORTING BUGS

40       Report bugs to <bug-gnu-gettext@gnu.org>.
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43       Copyright © 2003-2007 Free Software Foundation, Inc.   License  GPLv3+:
44       GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
45       This  is  free  software:  you  are free to change and redistribute it.
46       There is NO WARRANTY, to the extent permitted by law.
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SEE ALSO

49       The full documentation for envsubst is maintained as a Texinfo  manual.
50       If  the info and envsubst programs are properly installed at your site,
51       the command
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53              info envsubst
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55       should give you access to the complete manual.
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59GNU gettext-runtime 0.18.1         June 2010                       ENVSUBST(1)
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