lanx@lanx-1005HA:~$ echo $a,$b
0,0
lanx@lanx-1005HA:~$ a=666 b=42 perl -e 'print "@ENV{a,b}\n"' 
666 42
lanx@lanx-1005HA:~$ echo $a,$b
0,0

##</code><code>##

lanx@lanx-1005HA:~$ ps -edaf |grep perl
lanx      2731  2174  0 18:02 pts/2    00:00:00 perl -e print "@ENV{a,b}\n";sleep 100