4DOS

4DOS is a command-line interpreter by JP Software, designed to replace the default command interpreter <a href="/wiki/COMMAND.COM" title="COMMAND.COM">COMMAND.COM</a> in Microsoft DOS and Windows. It was written by Rex C. Conn and Tom Rawson and first released in 1989. Compared to the default, it has a large number of enhancements. 4OS2 and 4NT are similar products that replace <a href="/wiki/Cmd.exe" title="Cmd.exe">cmd.exe</a> in OS/2 and Windows NT respectively.

4DOS

4DOS is a command-line interpreter by JP Software, designed to replace the default command interpreter <a href="/wiki/COMMAND.COM" title="COMMAND.COM">COMMAND.COM</a> in Microsoft DOS and Windows. It was written by Rex C. Conn and Tom Rawson and first released in 1989. Compared to the default, it has a large number of enhancements. 4OS2 and 4NT are similar products that replace <a href="/wiki/Cmd.exe" title="Cmd.exe">cmd.exe</a> in OS/2 and Windows NT respectively.