sort by size in HPUX

ls -lR | sort -bn +4 (smallest to largest)
or
ls -lR | sort -bnr +4 (largest to smallest)

Work with linux cmd line.

Quick way to check battery cappacity:

upower -i /org/freedesktop/UPower/devices/battery_BAT0

Here’s a quick way to get the service tag (serial number):

dmidecode | grep "Serial Number" | head -n1
        Serial Number: DJ6GH3H