Each file has three permission triplets: user (owner), group, and others. Letters r w x mean read, write, execute — for directories execute means traverse. chmod changes bits using symbolic mode (u+rx) or octal (755). umask subtracts bits from default creation mode.
chmod examples
Full content is available with a subscription.
Get full access to all courses on the platform for one year with a single payment.
▼
Unlike other platforms that charge per course, here you get everything for one price, and after one year of use there will be no automatic charge for the following year.