[SOLVED] First script, results from find command

Passmossis · 10-27-2011, 10:55 AM

This is my first go at scripting in Linux. I'm using Red Hat Enterprise Client 5.7.

This test script is to find all files that match the criteria from a find command. Files that are found are passed through the script to have the correct permissions set.

Code:

#!/bin/bash
CorrectPermission=-r--------
ID=$(find /test -name abc -print)
echo $ID
Permisson=$(ls -l $ID | awk '{print $1}')

If there is only one file that meets the criteria of the find command, this works. If there are multiple results, the script fails. The reason it fails is the results from the find command are not parsed to multiple lines, I believe.

I am testing this script against:

Code:

/test/abc
/test/dif/abc

Where the two abc files have incorrect permissions.

Results of executing my script are:

Code:

/test/dif/abc /test/abc
Permissions: -rw-r--r-- -rwxrwxrwx
./test3.scr: line 7: [: too many arguments
Permissions: Incorrect
Updating permissions to: 400

This is not for any school assignment, but for personal understanding. Thank you for any help you can provide.

thesnow · 10-27-2011, 11:52 AM

You could use a loop, something like

Code:

#!/bin/bash
for i in `find /test -type f -name abc ! -perm 600`
do
 chmod 600 $i
done

Keep in mind, this would change permissions on all files in all subdirectories, even if they are executable. "man find" has many examples to help if this is not exactly what you're looking for.

In this situation, there isn't much benefit to checking the permissions since you want all files to be 600 (you could skip checking and just set all files to 600).

Passmossis · 10-27-2011, 12:33 PM

Thanks to your exert I was able to accomplish what I wanted to do. Thank you!

Code:

#!/bin/bash
CPerm=-rw-------
echo Setting correct permissions for abc
for i in `find /test -type f -name abc`
do
    echo Found $i
    Perm=$(ls -l $i | awk '{print $1}')
    echo Current permissions: $Perm
    if [ $Perm == $CPerm ]; then
        echo Permissions: Good
    else
        echo Permissions: Incorrect
        echo Updating permissions to: 600
        chmod 600 $i
        Perm=$(ls -l $i | awk '{print $1}')
        echo New permissions: $Perm
    fi
done

While I do like the '! -perm 600' in find, this script is a bit longer to where I also groom the owner and group owner fields using awk.

thesnow · 10-27-2011, 12:51 PM

You can also check out the "stat" command, it has the ability to output owner, permissions, etc based on the attributes you specify (unless you want to use awk).