Convert a time span in seconds to formatted time in shell

Question

I have a variable of $i which is seconds in a shell script, and I am trying to convert it to 24 HOUR HH:MM:SS. Is this possible in shell?

Answer 1

I use C shell, like this:

#! /bin/csh -f

set begDate_r = `date +%s`
set endDate_r = `date +%s`

set secs = `echo "$endDate_r - $begDate_r" | bc`
set h = `echo $secs/3600 | bc`
set m = `echo "$secs/60 - 60*$h" | bc`
set s = `echo $secs%60 | bc`

echo "Formatted Time: $h HOUR(s) - $m MIN(s) - $s SEC(s)"