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I learn some Ubuntu commands and some commands can take some parameter. I want to ask two questions.

First (more general): Are all parameters which use same abbreviation (like "-N"), used for same task?

Second (more particular): If yes, what does stand for -N parameter and what is its task? If no, what does stand for -N parameter and what is its task for gzip -N command?

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Each command has its own parameters.

You can see what they are by running man command.

man gzip

 -N --name
              When  compressing,  always  save the original file name and time
              stamp; this is the  default.  When  decompressing,  restore  the
              original  file  name  and  time stamp if present. This option is
              useful on systems which have a limit on file name length or when
              the time stamp has been lost after a file transfer.
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  • Does "-N --name" mean that "-N" and "--name" are same parameter?
    – Seyit Bilal
    Oct 22, 2016 at 13:22
  • Correct. You can use either way.
    – Pilot6
    Oct 22, 2016 at 13:22

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