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  1. or download this
    #!/usr/bin/perl -w
    
    ...
    }
    
    printf "%s = %s\n",$_,$ENV{$_} foreach keys %ENV;
    
  2. or download this
    setenv PATH_ORIG "${PATH}"
    setenv MANPATH_ORIG "${MANPATH}"
    setenv LD_LIBRARY_PATH_ORIG "${LD_LIBRARY_PATH}"