What Does Change Mode (chmod) Mean?
Change mode (chmod) is a Unix operating system command used by administrators and programmers to set or change the access permissions of a file or directory. These settings determine the level of access to be granted to the given file or directory.The chmod command was first used in ATT Unix 1 and is still in use today by Unix-like operating systems. It is also available as a C language library function in Unix.
Techopedia Explains Change Mode (chmod)
The syntax for change mode is as follows: chmod [OPTIONS]… MODE[,MODE]… FILENAME1 [,FILENAME2]… chmod [OPTION]… OCTAL-MODE FILENAME1 [,FILENAME2]… chmod [OPTION]… [REFERENCE] [OPERATOR] [MODES] FILENAME1 [,FILENAME2]..The chmod command has the following options:-R, –recursive: Changes the directories and files recursively-v, –verbose: Displays a diagnostic report for every processed file -c, –changes: Like verbose but displays only when there are actual changes-f, –silent:Suppress error messages–reference=RFILE: Use RFILE’s mode instead of MODE values Permissions are granted as follows: a: All o: Other g: Group r: Read u: User w: Write x: Execute or run as a program
