This tells you:
$ ls -l obj-x86_64-pc-linux-gnu/toolkit/library/gecko/ drwxr-xr-x 3 user user 4096 Nov 1 09:30 .deps drwxr-xr-x 2 user user 4096 Nov 1 09:30 include gecko drwxr-xr-x
In Docker environments (like selenium/standalone-firefox ), the processes often run under a non-root user named gecko . the system ensures:
When working with software like for browser automation, you often use geckodriver . If the permissions are not set correctly, you might encounter "Permission Denied" errors when your scripts try to launch Firefox. gecko drwxr-xr-x
If a Gecko directory had drwxrwxrwx (world-writable), a malicious website that escapes the sandbox could modify your browser’s engine files. By enforcing drwxr-xr-x , the system ensures: