Subtract time in two line

Shell Programming and Scripting
1

INPUT:

16:45:51 10051  77845
16:45:51 10051   77845

16:46:52 10051  77846
16:46:53 10051   77846

Match the last PID then subtract second line time with first line.

Please help me with any command or script.

2

Welcome vivekn,

Firstly, please wrap all code, files, input & output/errors in CODE tags. It makes them far easier to read and preserves spacing for indenting or fixed width data.

I have a few to questions pose in response:-

  • Is this homework/assignment? There are specific forums for these.
  • What have you tried so far?
  • What output/errors do you get?
  • What OS and version are you using?
  • What are your preferred tools? (C, shell, perl, awk, etc.)
  • What logical process have you considered? (to help steer us to follow what you are trying to achieve)

Most importantly, What have you tried so far?

There are probably many ways to achieve most tasks, so giving us an idea of your style and thoughts will help us guide you to an answer most suitable to you so you can adjust it to suit your needs in future.

We're all here to learn and getting the relevant information will help us all.

Kind regards,
Robin

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3

It on rhel7

---------- Post updated at 07:25 AM ---------- Previous update was at 05:03 AM ----------

Assignment,

Tried some awk command, but no success

4

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