Clodoaldo Neto Clodoaldo Neto - 1 month ago 5
Linux Question

Parse ps' "etime" output and convert it into seconds

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 seconds?


  • Please assume at least 3 digits for the days part as I don't know how long it can be.

  • The output will be
    egreped
    to one only line so no need for a loop.


Answer

With awk:

#!/usr/bin/awk -f  
BEGIN { FS = ":" }
{
  if (NF == 2) {
    print $1*60 + $2
  } else if (NF == 3) {
    split($1, a, "-");
    if (a[2] != "" ) {
      print ((a[1]*24+a[2])*60 + $2) * 60 + $3;
    } else {
      print ($1*60 + $2) * 60 + $3;
    }
  }
}

Run with :

awk -f script.awk datafile

Output:

1880790
55717
2894
1

And finally, if you want to pipe to the parser, you can do something like this:

ps h -eo etime | ./script.awk
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