-v

output the variables occurring in SHELL-FORMATInformative output:

-h

display this help and exit

-V

output version information and exitIn normal operation mode, standard input is copied to standard output, with references to environment variables of the form $VARIABLEor ${VARIABLE} being replaced with the corresponding values. If a SHELL-FORMAT is given, only those environment variables that arereferenced in SHELL-FORMAT are substituted; otherwise all environment variables references occurring in standard input are substi‐tuted.When --variables is used, standard input is ignored, and the output consists of the environment variables that are referenced inSHELL-FORMAT, one per line.AUTHORWritten by Bruno Haible.REPORTING BUGSReport bugs to <bug-gnu-gettext@gnu.org>.COPYRIGHTCopyright © 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.