printenv - print all or part of environment

SYNOPSIS

       printenv [--help] [--version] [variable...]

DESCRIPTION

       This  manual  page  documents the GNU version of printenv.
       If no arguments are  given,  printenv  prints  the  entire
       environment.   If one or more variable names are given, it
       prints the value of each one that is set, and nothing  for
       each one that is not set.

       The exit status is:
       0 if all variables specified were found
       1 if at least one specified variable was not found
       2 if a write error occurred

   OPTIONS
       --help Print  a  usage message on standard output and exit
              successfully.

       --version
              Print version information on standard  output  then
              exit successfully.