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Old 12-25-2013, 06:03 AM   #1
lmohammeed
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Question Basic question.


Dear respected users,
Can anybody tell me the difference between running this command
Code:
cat ~/.bashrc
as a superuser (in root) and as normal user (i.e. not from root). Because when I run in both cases I got different output. Any clarification in this regard is highly appreciated.
Thanks in advance for your response.
 
Old 12-25-2013, 06:09 AM   #2
druuna
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The ~ is special and is substituted with the home directory path of the user that executes it.

If you are root ~/.bashrc is substituted to /root/.bashrc and if you are userX it is substituted to /home/userX/.bashrc

Each user has its own .bashrc file, and they do not have to be the same. Most normal users have a .bashrc that is basically the same (assuming you haven't changed anything yourself). Root has a more restrictive .bashrc file (or none at all).
 
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Old 12-25-2013, 07:09 AM   #3
lmohammeed
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Question Basic question.

Thank you druuna for your reply. It clarify my doubt. In addition, as a follow up question what does this command
Code:
cat /.bashrc
meant.
Thanks.
 
Old 12-25-2013, 07:23 AM   #4
druuna
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The cat command shows the content of a file (not sure if you know this).

The /.bashrc part: the / reflects the root (/) directory (not to be confused with the root home directory, which is /root) and the .bashrc reflects the file.

Most, if not all, Linux distro's have their users dedicated to /home (or, in root's case /root). So the above example will probably give you an error message telling you that the file does not exist at that location:
Code:
$ cat /.bashrc
cat: /.bashrc: No such file or directory
Maybe these 2 links will also be of use to you:
- Change Directory (cd) Examples | Unix and Linux Command
- Absloute path vs relative path in Linux
 
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Old 12-25-2013, 08:08 AM   #5
lmohammeed
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Question Basic question.

Thank you druuna.
Quote:
The cat command shows the content of a file (not sure if you know this)
, yes I know. The links you provided are useful.
Thanks
 
Old 12-25-2013, 08:15 AM   #6
druuna
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You're welcome.

BTW: I have an LQ blog entry with many links, which might be of help in the future: Resources / References / Useful links
 
  


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