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I have a tmp folder in /var and it has the file channel.xml in it.

I don't know what this is and if it should be there and what permissions it should have because at the moment it is wide open.

Also what is the folder above /var called please?

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Take a look at this tutorial to get yourself familiar with Linux: techradar.com/us/news/software/operating-systems/… –  slm Dec 14 '13 at 3:46

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up vote 4 down vote accepted

The directory /var/tmp should have permissions rwxrwxrwt, which allow anyone to change to this directory, create and read files in this directory and write/rename/delete files they own (this last restriction is caused by the t in the permissions, which is the "sticky bit").

The file you see in there is a temporary file created by something on your system. You can look at its ownership or try and see what process has it open to get a clue as to what wrote it. The XML schema in the top of the file may also help out with that.

The folder above /var is /, also know as the root directory.

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But when I command cd ~/ I get my root which looks nothing like when I go one up from /var with cd .. –  cea Dec 14 '13 at 2:39
    
The directory ~ is your users home directory, which is /home/<username> for normal users or /root for the superuser. –  casey Dec 14 '13 at 2:41
    
how do i access this other root, which command please? besides cd .. up from /var i mean –  cea Dec 14 '13 at 2:42
    
Use cd / to access the / directory. –  casey Dec 14 '13 at 2:43

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