Learn Linux Shell Scripting - Fundamentals of Bash 4.4

Chapter 5

1. Which three permissions are used for Linux files?
   • Read
   • Write
   • Execute
2. Which three types of ownership are defined for Linux files?
   • User
   • Group
   • Others
3. Which command is used to change the permissions on a file? chmod
4. What mechanism controls the default permissions for newly created files? umask
5. How is the following symbolic permission described in octal: rwxrw-r--0764. 7 from rwx on the first three places (user), 6 from rw- on the second three places (group), and 4 from r-- on the last three places (others).
6. How is the following octal permission described symbolically: 0644 rw-r--r--. First 6 is ReadWrite, then two 4s which are just Reads.
7. Which command allows us to gain superuser privileges? sudo
8. Which commands can we use to ...