Question : chmod -R  - how to give group the same permissions as owner has for all sibdirs/files

Hello,
I (let's say username=UserMe, Group=MyGroup) installed SW package to the directory MyPackage. I own this directory (and all the files below as they were installed under my username).

Now I want that other Users from my group access this directory (and sub dirs/files) with the same privileges for read,write,execute as me.

I.e. I want to "copy" the set of permissions of each file/dir to the group.

i.e. if now "rw-r--r--   myfile"  I want to have "rw-rw-r--  myfile"

Is this possible and how ? Can I do it or I need to ask root administrator ? (I guess I can do it as he ower of this dir?)

Thanks

Answer : chmod -R  - how to give group the same permissions as owner has for all sibdirs/files

find . -perm +00400 | xargs chmod g+w
etc etc ( 6 times all the ~ same...)
will be quicker... ( each one chmod will get as many files as fits in argument )


basically I suggest two solutions to your problem ( chown and chgrp will be used besides chmod)

Solution 1: ( recommended if your program is suid already)
Make program sgid , and all users that need to run it in that group .
Solution 2: ( recommended if you need only the program to access datafiles)
Make program u+s o-a and all data files will be owned by that user and accessed via ultimate program