Check permissions with ls command in Ubuntu

You need to run the ls command with la attribute to get the permissions of a folder in Ubuntu:

ls -la

Navigate to the folder for which you want to check the permissions and then run ls -la command. You will get the output like this:

drwxrwsr-x  7 www-data www-public-grp  4096 Sep  2 18:24 admin
drwxrwsr-x  2 www-data www-public-grp  4096 Sep  2 18:24 config
drwxrwsr-x  8 www-data www-public-grp  4096 Sep  2 18:24 core

The first column represents the permissions.