GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
CentOS 4.8 |
i386 |
 |
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 to <bug-gnu-gettext@gnu.org>.
Copyright
© 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 PARTICULAR PURPOSE.
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.
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envsubst(1) | |