Bash script: make sure all files have certain permissions

[tekmc]

How can I iterate over all the files in the current directory to check for certain permissions? This is what I have:

#!/bin/bash
for file in *.tar.gz
do
    if [ -r "$file" ]
    then
        echo "$file is readable"
    else
        echo "$file is NOT readable"
    fi
done

But this only checks that the current user has read permissions for each file. I want to check that the group "others" has read permissions for each file. How can I do this? Is there a built in function to check if a file has read permissions for the "others" group?

Otherwise, I thought I might be able to use this

$ stat --format=%a file
744

And parse the output "744" and make sure the 3rd number is between 4 and 7 (since the octals 4-7 have read permissions for others)

Thanks

[HROAdmin26]

Read:

man find

[tekmc]

Beautiful. I ended up using this script:

#!/bin/bash



non_readable=`find . -name '*.tar.gz' ! -perm -a=r -printf "%f "`

if [ ${#non_readable} -gt 0 ]; then

echo "These files do not have read permissions for all:"

ls -l ${non_readable}

fi