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envsubst (1)
  • >> envsubst (1) ( Linux man: Команды и прикладные программы пользовательского уровня )
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    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 <bug-gnu-gettext@gnu.org>.  

    COPYRIGHT

    Copyright © 2003-2005 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.  

    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.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    Operation mode:
    Informative output:
    AUTHOR
    REPORTING BUGS
    COPYRIGHT
    SEE ALSO


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