bash shell will allow you to use wildcards for file names passed to chmod, the command line tool you use to alter permissions.

e.g. if you want to alter the permissions on all the .php files in a directory, changing them to 754 (root:read+write+execute, group:read+execute,user:read)

chmod 754 /directory/files/are/in/*.php

Linux also allows you to chain commands together, using the | symbol, to pass on the results of one command to another, that gives you a lot of flexibility to achieve whatever you desire.

e.g. we can chain the ls (directory listing) command together with chmod:

ls /directory/files/are/in/*.php | xargs chmod 754

Yet another possibility is using the find command to files and the exec argument to tell find to do something to the files:

find /directory/files/are/in -name *.php -exec chmod 754 {} \;
Source(s):
Personal experience, over 10 years of *nix systems support.


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