CODEWITHSUNDEEP
shell
Nick Vanderbilt
Nick Vanderbilt

Reputation: 38450

shell command for ps

What's the difference between the following two commands. I know the output is different but what is that = sign before rss?

$ ps -orss -p 62277
   RSS
111636

$ ps -o rss= -p 62277
111636

Upvotes: 1

Views: 552

Answers (1)

shellter
shellter

Reputation: 37268

The -o specifies that you will be listing the columns that you want displayed. Adding an = after the column name (rss in this case), gives you the opportunity to override the default value for the column header, you could put -o rss=ResidentSet for example, but with an empty =, you are saying 'no column header'.

Upvotes: 3

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