$./parallelize_em_demo.pl
touch a; ls -l a; sleep 2
-rw-r--r--  1 hartmann users 0 2006-06-09 17:58 a
touch b; ls -l b; sleep 2
-rw-r--r--  1 hartmann users 0 2006-06-09 17:58 b
touch c; ls -l c; sleep 2
-rw-r--r--  1 hartmann users 0 2006-06-09 17:58 c
touch d; ls -l d; sleep 2
-rw-r--r--  1 hartmann users 0 2006-06-09 17:58 d
touch e; ls -l e; sleep 2
-rw-r--r--  1 hartmann users 0 2006-06-09 17:58 e

time elapsed serial: 10

( ( touch a; ls -l a; sleep 2 ) & );( ( touch b; ls -l b; sleep 2 ) & );( ( touch c; ls -l c; sleep 2 ) & );( ( touch d; ls -l d; sleep 2 ) & );( ( touch e; ls -l e; sleep 2 ) & );
-rw-r--r--  1 hartmann users 0 2006-06-09 17:58 a
-rw-r--r--  1 hartmann users 0 2006-06-09 17:58 b
-rw-r--r--  1 hartmann users 0 2006-06-09 17:58 c
-rw-r--r--  1 hartmann users 0 2006-06-09 17:58 e
-rw-r--r--  1 hartmann users 0 2006-06-09 17:58 d

time elapsed parallel: 2

$