The meaning of permissions on files and directories in Linux

The meaning of the permissions to the file:

R: Read file contents corresponding command: Cat more head tail

W: Edit, add, modify the contents of the file, note: But does not include the output file corresponding command: VI Echo

X: Executable

The meaning of permissions on the directory:

R: Can query the directory under the file name corresponding command: LS Note: For the directory only 0 5 73 permissions, only to enter the directory to read, so must have execute permissions, if not execute permissions, can only see the file name, other information is garbled

W: Have permissions to modify the directory structure, such as create new files and directories, delete files and directories under this file, rename files and directories in this directory corresponding command: Touch RM CP MV

X: can enter directory corresponding command: CD

The meaning of permissions on files and directories in Linux