 | This article includes a list of general references, but it lacks sufficient corresponding inline citations. (January 2013) |
 Example usage of comm command | |
| Original author(s) | Lee E. McMahon |
|---|---|
| Developer(s) | AT&T Bell Laboratories, Richard Stallman, David MacKenzie |
| Initial release | November 1973 |
| Written in | C |
| Operating system | Unix, Unix-like, Plan 9, Inferno |
| Platform | Cross-platform |
| Type | Command |
| License | coreutils: GPLv3+ Plan 9: MIT License |
The comm command in the Unix family of computer operating systems is a utility that is used to compare two files for common and distinct lines. comm is specified in the POSIX standard. It has been widely available on Unix-like operating systems since the mid to late 1980s.