ENVSUBST(1)			     GNU			  ENVSUBST(1)



NAME
       envsubst - substitutes environment variables in shell format strings

SYNOPSIS
       envsubst [OPTION] [SHELL-FORMAT]

DESCRIPTION
       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 .

COPYRIGHT
       Copyright (C) 2003-2004 Free Software Foundation, Inc.
       This is free software; see the source for copying  conditions.	There
       is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

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.



GNU gettext-runtime 0.14.1	 January 2004			  ENVSUBST(1)

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