In computing, start is a command of the IBM OS/2,[1] Microsoft Windows[2] and ReactOS[3] command-line interpreter cmd.exe[4] (and some versions of COMMAND.COM) to start programs or batch files or to open files or directories using the default program.

Developer(s)IBM, Microsoft, ReactOS Contributors
Operating systemOS/2, Microsoft Windows, ReactOS
Description of the START command of RT-11SJ displayed on a VT100.

The command is also one of the basic commands implemented in the Keyboard Monitor (KMON) of the DEC RT-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 environmentsEdit

The equivalent Bash command is open. It opens a file in its default application. In PowerShell, the Invoke-Item cmdlet is used to invoke an executable or open a file.[8] On Apple Macintosh, the corresponding command is open and on Stratus OpenVOS it is start_process.[9]


Windows, ReactOSEdit

start "title" [/D path] [options] "command" [parameters]


Windows, ReactOSEdit

C:\>start notepad file.txt
C:\>start "C:\My Music\My Song.mp3"

See alsoEdit


  1. ^
  2. ^
  3. ^
  4. ^ Start - TechNet, Microsoft
  5. ^
  6. ^ TOPS-10 Operating System Commands Manual (pdf). Digital Equipment Corporation. August 1980. Retrieved 2019-02-17.
  7. ^ "TOPS-20 Command manual" (PDF).
  8. ^
  9. ^

Further readingEdit

External linksEdit