Awk function to print seconds elapsed in a human-friendly format

humantime.awk

##
##  Awk function to print seconds elapsed in a human-friendly format
##
##  via: https://stackoverflow.com/q/12199631#comment71504103_28451379
##

function humantime(secs,        fmt) {
    fmt = "%2dh %2dm %2ds"

    if (secs/86400 > 1) {
        fmt = "%2dd " fmt  # prepend days to the output
        return sprintf(fmt, secs/86400, secs%86400/3600, secs%3600/60, secs%60)
    } else {
        return sprintf(fmt, secs%86400/3600, secs%3600/60, secs%60)
    }
}

# vim: ft=awk

Credit the original author (https://stackoverflow.com/users/2195972/blue) if you wish, but it's just math here, so I would consider this code snippet to be in the public domain.