Visual Unix file permission calculator with octal and symbolic notation
chmod 755 filename
rwxr-xr-x
755
Owner full, group/others read+execute (executables, directories)
644
rw-r--r--
Owner read+write, group/others read (regular files)
700
rwx------
Owner full, no access for others (private directories)
600
rw-------
Owner read+write, no access for others (private files)
777
rwxrwxrwx
Full access for everyone (use with caution)
750
rwxr-x---
Owner full, group read+execute, no access for others
664
rw-rw-r--
Owner/group read+write, others read only
444
r--r--r--
Read-only for everyone