Parse ps' “etime” output and convert it into seconds

Question

These are possible output formats for ps h -eo etime

21-18:26:30
   15:28:37
      48:14
      00:01

How to parse them into se

Answer 1

#!/bin/bash
echo $1 | sed 's/-/:/g' |  awk -F $':' -f <(cat - <<-'EOF'
  {
    if (NF == 1) {
        print $1
    }
    if (NF == 2) {
        print $1*60 + $2
    }
    if (NF == 3) {
        print $1*60*60 + $2*60 + $3;
    }
    if (NF == 4) {
        print $1*24*60*60 + $2*60*60 + $3*60 + $4;
    }
    if (NF > 4 ) {
        print "Cannot convert datatime to seconds"
        exit 2
    }
  }
EOF
) < /dev/stdin

Then to run use:

ps -eo etime | ./script.sh 

Answer 2

Works on AIX 7.1:

ps -eo etime,pid,comm | awk '{if (NR==1) {print "-1 ",$0} else {str=$1; sub(/-/, ":", str="0:0:"str); n=split(str,f,":"); print 86400*f[n-3]+3600*f[n-2]+60*f[n-1]+f[n]," ",$0}}' | sort -k1n

Answer 3

Think I might be missing the point here but the simplest way of doing this is:

ps h -eo etimes

Note the 's' on the end of etime.

Answer 4

[[ $(ps -o etime= REPLACE_ME_WITH_PID) =~ ((.*)-)?((.*):)?(.*):(.*) ]]
printf "%d\n" $((10#${BASH_REMATCH[2]} * 60 * 60 * 24 + 10#${BASH_REMATCH[4]} * 60 * 60 + 10#${BASH_REMATCH[5]} * 60 + 10#${BASH_REMATCH[6]}))

Pure BASH. Requires BASH 2+ (?) for the BASH_REMATCH variable. The regex matches any of the inputs and places the matched strings into the array BASH_REMATCH, which parts of are used to compute number of seconds.

Answer 5

Ruby version:

def psETime2Seconds(etime)
  running_secs = 0
  if etime.match(/^(([\d]+)-)?(([\d]+):)?([\d]+):([\d]+)$/)
    running_secs += $2.to_i * 86400 # days
    running_secs += $4.to_i * 3600  # hours
    running_secs += $5.to_i * 60    # minutes
    running_secs += $6.to_i         # seconds
  end
  return running_secs
end

Answer 6

A version for Python:

ex=[
    '21-18:26:30',
    '06-00:15:30',
    '15:28:37',
    '48:14',
    '00:01'
    ]

def etime_to_secs(e):
    t=e.replace('-',':').split(':')
    t=[0]*(4-len(t))+[int(i) for i in t]
    return t[0]*86400+t[1]*3600+t[2]*60+t[3]

for e in ex:
    print('{:11s}: {:d}'.format(e, etime_to_secs(e)))