I\'m trying to find out how to limit a program execution time within a Windows batch file. Is there something like Unix timeout
command?
Please advise.
This code waits 60 seconds, then checks to see if %ProgramName% is running.
To increase this time, change the value of WaitForMinutes
.
To decrease the interval between checks, set WaitForSeconds
for the number of seconds you want it to wait.
@echo off
set ProgramName=calc.exe
set EndInHours=2
:: How Many Minutes in between each check to see if %ProgramName% is Running
:: To change it to seconds, just set %WaitForSeconds% Manually
set WaitForMinutes=1
set /a WaitForSeconds=%WaitForMinutes%*60
:: How many times to loop
set /a MaxLoop=(%EndInHours%*60*60) / (%WaitForMinutes%*60)
REM Use a VBScript popup window asking to terminate %ProgramName%
echo set WshShell = WScript.CreateObject("WScript.Shell") > %tmp%\tmp.vbs
echo Wscript.Quit (WshShell.Popup( "Click 'OK' to terminate %ProgramName%." ,10 ,"Terminate %ProgramName%", 0)) >> %tmp%\tmp.vbs
start %ProgramName%
set running=True
:: Give time for %ProgramName% to launch.
timeout /t 5 /nobreak > nul
setlocal enabledelayedexpansion
for /l %%x in (1,1,%MaxLoop%) do (
if "!running!"=="True" for /l %%y in (1,1,%WaitForMinutes%) do (
if "!running!"=="True" (
set running=False
REM call Pop-Up
cscript /nologo %tmp%\tmp.vbs
if !errorlevel!==-1 (
for /f "skip=3" %%x in ('tasklist /fi "IMAGENAME EQ %ProgramName%"') do set running=True
) else (
taskkill /im %ProgramName%
)
)
)
)
if exist %tmp%\tmp.vbs del %tmp%\tmp.vbs
This code uses VBScript to make a pop-up box. Clicking OK
will cause %ProgramName% to be killed via taskkill
.
If you do not want to use a pop-up window, you can use timeout
by removing...
REM Use a VBScript popup window asking to terminate %ProgramName%
echo set WshShell = WScript.CreateObject("WScript.Shell") > %tmp%\tmp.vbs
echo Wscript.Quit (WshShell.Popup( "Click 'OK' to terminate %ProgramName%." ,10 ,"Terminate %ProgramName%", 0)) >> %tmp%\tmp.vbs
...and replacing this...
REM call Pop-Up
cscript /nologo %tmp%\tmp.vbs
if !errorlevel!==-1 (
...with this:
REM Use CTRL+C to kill %ProgramName%
timeout /t %WaitForSeconds% /nobreak
if !errorlevel!==0 (
Using /nobreak
is necessary because timeout
does not distinguish between pressing a key or timing out. This will allow you to terminate %ProgramName% by pressing CTRL+C , but that causes your batch file to ask Terminate batch job (Y/N)?
when you do. Sloppy/Messy/Nasty IMHO.
You could instead use CHOICE
by replacing the above mentioned code with this:
REM Using choice, but choice can get stuck with a wrong keystroke
Echo [K]ill %ProgramName% or [S]imulate %WaitForSeconds% Seconds
Choice /n /c sk /t %WaitForSeconds% /d s
if !errorlevel!==1 (
But choice brings it's own set of limitations to the table. For one thing, it will stop it's countdown if a key that is not among it's choices (in this case s
and k
) has been pressed, essentially locking up until a correct choice is made. Second, the SPACEBAR cannot be a choice.
I don't think there is a timeout command. However, you can start executing a task in the background and sleep (using ping) for the timeout duration then kill the task.
To limit the time a program has to run you could do something like this
start yourprogram.exe
timeout /t 10
taskkill /im yourprogram.exe /f
That starts yourprogram.exe
, waits 10 seconds, then kills the program.
I just installed Cygwin and use unix-style timeout
command from the distribution.