Get serial number of AIX

Get the serial number of an AIX system.

#!/bin/ksh
#
# Get serial number of AIX server;
#
# October 28, 2009 Rich Kreider
#
ser_num=`lsattr -El sys0 -a systemid | awk '{print $2}' | awk -F, '{print $2}'`
prefix=`echo ${ser_num} | cut -c3-4`
suffix=`echo ${ser_num} | cut -c5-9`
echo ${prefix}-${suffix}