The command is also one of the basic commands implemented in the Keyboard Monitor (KMON) of the DECRT-11 operating system.[5]
The TOPS-10[6] and TOPS-20[7] operating systems also provide a start command. It is used to start a program in memory at a specified address.
Other environments
Typical Unix shells (bash, etc.) have no built-in registry of file types and associated default applications. Linux command-line tools with similar functions include xdg-open[8] and run-mailcap.
On Cygwin, the command is implemented as the cygstart executable.[9]
In PowerShell, the Invoke-Item cmdlet is used to invoke an executable or open a file.[10]