Linux command: chmod
Revision as of 02:07, 22 March 2015 by Rafahsolis (talk | contribs) (Created page with "chmod <octal_value> file<br /> The octal (0-7) value is calculated by adding up the values for each digit<br /> User (rwx) = 4+2+1 = 7<br /> Group(rx) = 4+1 = 5<br /> World (...")
chmod <octal_value> file
The octal (0-7) value is calculated by adding up the values for each digit
User (rwx) = 4+2+1 = 7
Group(rx) = 4+1 = 5
World (rx) = 4+1 = 5
chmode mode = 0755
Examples
chmod 400 file - Read by owner
chmod 040 file - Read by group
chmod 004 file - Read by world
chmod 200 file - Write by owner
chmod 020 file - Write by group
chmod 002 file - Write by world
chmod 100 file - execute by owner
chmod 010 file - execute by group
chmod 001 file - execute by world
To combine these, just add the numbers together:
chmod 444 file - Allow read permission to owner and group and world
chmod 777 file - Allow everyone to read, write, and execute file