rwxrwxrwx
User, Group, Others
User: owner of file
Group: group that owns file
Others: All other users not part of group that owns file.
RWX = Read Write Execute
Read: See contents of file but not modify it
Write: someone can make file changes but not read contents
Execute: someone can run file
use chmod to change permissions of a file
you can change permissions using the chmod command: chmod midifys file bits.
done on 2 ways
Octal: Uses 3 values to represent read write and execute
755,644,777
Symbolic: Uses shorthand for user group others
In Octal read write and execute are each assigned a different value. 4,2, and 1 read (4) write (2) execute (1)
You can represent various states of these values with just 1 digit. if a user can read write and execute that comes out to 7
symbolic file permissions
user represented by (u)
group (g)
others (o)
all (a)
+- adds permission
- removes permission
= adds permission but removes aothers
