Changing umask permissions

sniper8752 · 11-22-2020, 07:40 AM

I am running an app, and I would like to change the permissions that are applied when new files are created. Currently, when a new file is created, it looks like this: -rw-r--r--. Yet, umask -S returns this: u=rwx,g=rx,o=rx. Why are these not lining up?

berndbausch · 11-22-2020, 08:11 AM

Because umask doesn't affect the x flag. If you want a file to be executable, you must set x explicitly.

Actually, umask removes permission bits. Since the x flag is not set, it remains unset. More info: https://unix.stackexchange.com/quest...sions-on-files.

rknichols · 11-22-2020, 09:19 AM

The umask setting only subtracts from the permissions that a program requests for new files. Most programs request mode rw-rw-rw- for files. Only a few programs (the linker, "ld", being the prime example) request execute permission.