In computing, share is a command for DOS that allows software to perform file locks.
[7] The FreeDOS version was developed by Ron Cemer and is licensed under the GPL.
[8] DR DOS 6.0[9] and Datalight ROM-DOS[10] include an implementation of the share command.
The share MS-DOS subsystem command performs functions that are now inherent to Microsoft Windows.
It is available to preserve compatibility with existing files, but has no effect at the command line because the functionality is automatic.