Numeric
755
Symbolic
rwxr-xr-x
Command
chmod 755 file
Read (4) Write (2) Execute (1) Octal
Special
setuid
setgid
sticky
0
Owner
7
Group
5
Others
5
Common Presets
777 Full access
755 Standard dir
750 Group access
700 Owner only
664 Shared file
644 Standard file
600 Private file
400 Read-only
4755 Setuid
2755 Setgid
1777 Sticky /tmp