AIX: How to check the HMC Uptime

Minutes

echo  $(( $(printf "%.0f" "$(cat /proc/uptime | cut -d " " -f 1)") / 60))

Hour

echo  $(( $(printf "%.0f" "$(cat /proc/uptime | cut -d " " -f 1)") / 60 / 60))

Days

echo  $(( $(printf "%.0f" "$(cat /proc/uptime | cut -d " " -f 1)") / 60 / 60 / 24))

or

who -b

Example:

hscroot@testhmc:~> echo $(( $(printf “%.0f” “$(cat /proc/uptime | cut -d ” ” -f 1)”) / 60 / 60 / 24))
283
hscroot@testhmc:~>

hscroot@testhmc:~> who -b
system boot 2015-12-27 02:39
hscroot@testhmc:~>