If you need to apply these specific permissions to a directory related to your Gecko or geckodriver installation, you can use the chmod command. Linux / Unix File Permissions Explained - Warp
In a standard Linux Filesystem Hierarchy Standard (FHS) layout, this might be found in: /usr/lib/mozilla/gecko or /opt/firefox/gecko . gecko drwxr-xr-x
If you compile Firefox from source (Mozilla’s own build system), you’ll often see a obj-* directory containing stage folders like: If you need to apply these specific permissions