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Old 08-16-2012, 02:35 PM   #1
dynomite1988
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What does this command do?


Hi there,
I am taking a beginners Linux course and we are using Red Hat version 9 (Shrike). During our last test the professor asked us what this command would do and I was a little stumped on it. Could somebody please tell me in detail what this following command would do?

Trap "rm ~/tmp* 2> /dev/null; exit" 0 1 2 3

If anybody knows where I can learn more about these command could you please tell me? That would be greatly appreciated.
Thank you
 
Old 08-16-2012, 02:49 PM   #2
pixellany
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Open a terminal and go thru these steps:

man trap
man rm
man exit

Also, look up "redirection"---Google will find it, or you can read about it here:
http://www.tldp.org/LDP/abs/abs-guide.pdf
 
Old 08-16-2012, 03:23 PM   #3
Celyr
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Quote:
Originally Posted by dynomite1988 View Post
Hi there,
I am taking a beginners Linux course and we are using Red Hat version 9 (Shrike). During our last test the professor asked us what this command would do and I was a little stumped on it. Could somebody please tell me in detail what this following command would do?

Trap "rm ~/tmp* 2> /dev/null; exit" 0 1 2 3

If anybody knows where I can learn more about these command could you please tell me? That would be greatly appreciated.
Thank you
Be case sensitive .
It does:
$ rm ~/tmp* 2> /dev/null
$ exit
When the shell receives either signal 0 1 2 3, tell your teacher that using signal name instead of numbers is a good idea.
 
Old 08-16-2012, 10:51 PM   #4
suttiwit
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Linux command-line is case-sensitive so case matters. (Rm = Invalid, rm = valid.)
You can look in the man page and if you need any other help about it feel free to contact me.
 
  


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