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Suppose I have a directory on Linux with a bunch of files and subdirectories. This is that root directory:
drwxr-xr-x 13 user1 group1 4096 May 7 15:58 apps
Now, I only want to alter the group portion of those permissions. I want to alter it in such a way that it exactly matches the owner portion. The result for that directory would be:
drwxrwxr-x 13 user1 group1 4096 May 7 15:58 apps
But, I want a script or command to do this automatically, not just for that directory but for every subdirectory and file recursively under it. Anyone know how?
Thanks.
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To change file and directory permissions, use the command chmod (change mode). The owner of a file can change the permissions for user ( u ), group ( g ), or others ( o ) by adding ( + ) or subtracting ( - ) the read, write, and execute permissions.
Stupid simple command to change ownership (chown) and change group (chgrp) at the same time. To simultaneously change both the owner and group of files or directories in linux use the following command structure: chown someusername:somegroupname filename.
The chown command changes the owner of a file, and the chgrp command changes the group. On Linux, only root can use chown for changing ownership of a file, but any user can change the group to another group he belongs to. The plus sign means “add a permission,” and the x indicates which permission to add.
777 - all can read/write/execute (full access). 755 - owner can read/write/execute, group/others can read/execute. 644 - owner can read/write, group/others can read only.
Give this a try (test it first):
chmod -R g=u apps
The = copies the permissions when you specify a field (u, g or o) on the right side or sets it absolutely when you specify a permission (r, w or x) on the right.
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