Date: Thu, 11 Nov 1999 01:04:29 +0800 (WST) From: Michael Kennett <mike@laurasia.com.au> To: freebsd-questions@freebsd.org Subject: Testing file permissions Message-ID: <199911101704.BAA05709@laurasia.com.au>
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Hello All,
How do I test the permissions of a file in a script?
I'm making some changes to the daily admin scripts, and I'd like to test
the permissions and ownership of a couple of files and directories. The
only way I can do it is to use the `ls -l' command and to process the text
output.
e.g. To test that the /bin/ls command is world executable (trivial example):
if [ -f /bin/ls ] && ( ls -l /bin/ls | cut -b 4 | grep x > /dev/null )
then
echo "World Executable"
fi
This seems *rather* crude!
An alternative approach (just thought of it!) would be to use the 'find'
command:
if find /bin -name ls -perm -400 | grep ls > /dev/null
then
echo "World Executable"
fi
But this is equally crude -- indeed, I feel like I'm smashing the problem
with the biggest sledgehammer that I can find!
Is there another way of doing this test of file permissions?
Similarly, is there a quick test for checking the ownership of a file?
Regards,
Mike Kennett
(mike@laurasia.com.au)
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