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When writing a batch file to automate something on a Windows box, I've needed to pause its execution for several seconds (usually in a test/wait loop, waiting for a process to start). At the time, the best solution I could find uses ping (I kid you not) to achieve the desired effect. I've found a better write-up of it , which describes a callable "wait.bat", implemented as follows:
@ping 127.0.0.1 -n 2 -w 1000 & nul
@ping 127.0.0.1 -n %1% -w 1000& nul
You can then include calls to wait.bat in your own batch file, passing in the number of seconds to sleep.
(at last!). In the meantime, for those of us still using Windows&XP, Windows 2000 or (sadly) , is there a better way?
I modified the sleep.py script in the , so that it defaults to one second if no arguments are passed on the command line:
import time, sys
time.sleep(float(sys.argv[1]) if len(sys.argv) & 1 else 1)
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If you have Python installed, or don't mind installing it (it has other uses too :), just create the following sleep.py script and add it somewhere in your PATH:
import time, sys
time.sleep(float(sys.argv[1]))
It will allow sub-second pauses (for example, 1.5 sec, 0.1, etc.), should you have such a need. If you want to call it as sleep rather than sleep.py, then you can add the .PY extension to your PATHEXT environment variable. On Windows&XP, you can edit it in:
My Computer → Properties (menu) → Advanced (tab) → Environment Variables (button) → System variables (frame)
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command is available from Windows&Vista onwards:
c:\& timeout /?
TIMEOUT [/T] timeout [/NOBREAK]
Description:
This utility accepts a timeout parameter to wait for the specified
time period (in seconds) or until any key is pressed. It also
accepts a parameter to ignore the key press.
Parameter List:
Specifies the number of seconds to wait.
Valid range is -1 to 99999 seconds.
Ignore key presses and wait specified time.
Displays this help message.
NOTE: A timeout value of -1 means to wait indefinitely for a key press.
TIMEOUT /?
TIMEOUT /T 10
TIMEOUT /T 300 /NOBREAK
TIMEOUT /T -1
Note: It does not work with input redirection - trivial example:
C:\&echo 1 | timeout /t 1 /nobreak
ERROR: Input redirection is not supported, exiting the process immediately.
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Using the ping method as outlined is how I do it when I can't (or don't want to) add more executables or install any other software.
You should be pinging something that isn't there, and using the -w flag so that it fails after that amount of time, not pinging something that is there (like localhost) -n times. This allows you to handle time less than a second, and I think it's slightly more accurate.
(test that 1.1.1.1 isn't taken)
ECHO Waiting 15 seconds
PING 1.1.1.1 -n 1 -w 15000 & NUL
PING -n 15 -w
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I disagree with the answers I found here.
I use the following method entirely based on Windows&XP capabilities to do a delay in a batch file:
DELAY.BAT:
REM DELAY seconds
REM GET ENDING SECOND
FOR /F "TOKENS=1-3 DELIMS=:." %%A IN ("%TIME%") DO SET /A H=%%A, M=1%%B%%100, S=1%%C%%100, ENDING=(H*60+M)*60+S+%1
REM WAIT FOR SUCH A SECOND
FOR /F "TOKENS=1-3 DELIMS=:." %%A IN ("%TIME%") DO SET /A H=%%A, M=1%%B%%100, S=1%%C%%100, CURRENT=(H*60+M)*60+S
IF %CURRENT% LSS %ENDING% GOTO WAIT
You may also insert the day in the calculation so the method also works when the delay interval pass over midnight.
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SLEEP.exe is included in most Resource Kits e.g.
which can be installed on Windows XP too.
time-to-sleep-in-seconds
sleep [-m] time-to-sleep-in-milliseconds
sleep [-c] commited-memory ratio (1%-100%)
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I faced a similar problem, but I just knocked up a very short C++ console application to do the same thing. Just run MySleep.exe 1000 - perhaps easier than downloading/installing the whole resource kit.
#include &tchar.h&
#include &stdio.h&
#include "Windows.h"
int _tmain(int argc, _TCHAR* argv[])
if (argc == 2)
_tprintf(_T("Sleeping for %s ms\n"), argv[1]);
Sleep(_tstoi(argv[1]));
_tprintf(_T("Wrong number of arguments.\n"));
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Over at Server Fault, , the solution there was:
choice /d y /t 5 & nul
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You could use the Windows cscript WSH layer and this wait.js JavaScript file:
if (WScript.Arguments.Count() == 1)
WScript.Sleep(WScript.Arguments(0)*1000);
WScript.Echo("Usage: cscript wait.js seconds");
Depending on your compatibility needs, either use ping:
ping -n &numberofseconds+1& localhost &nul 2&&1
e.g. to wait 5 seconds, use
ping -n 6 localhost &nul 2&&1
or on Windows 7 or later use timeout:
timeout 6 &nul
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You can use ping:
ping 127.0.0.1 -n 11 -w 1000 &nul: 2&nul:
It will wait 10 seconds.
The reason you have to use 11 is because the first ping goes out immediately, not after one second. The number should always be one more than the number of seconds you want to wait.
Keep in mind that the purpose of the -w is not to wait one second. It's to ensure that you wait no more than one second in the event that there are network problems. ping on its own will send one ICMP packet per second. It's probably not required for localhost, but old habits die hard.
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Just put this in your batch file where you want the wait.
@ping 127.0.0.1 -n 11 -w 1000 & null
There is a better way to sleep using ping. You'll want to ping an address that does not exist, so you can specify a timeout with millisecond precision. Luckily, such an address is defined in a standard (RFC 3330), and it is 192.0.2.x. This is not made-up, it really is an address with the sole purpose of not-existing (it may not be clear, but it applies even in local networks):
192.0.2.0/24 - This block is assigned as "TEST-NET" for use in
documentation and example code.
It is often used in conjunction with
domain names example.com or example.net in vendor and protocol
documentation.
Addresses within this block should not appear on the
public Internet.
To sleep for 123 milliseconds, use ping 192.0.2.1 -n 1 -w 123 &nul
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In Notepad, write:
set /a WAITTIME=%1+1
PING 127.0.0.1 -n %WAITTIME% & nul
Now save as wait.bat in the folder C:\WINDOWS\System32,
then whenever you want to wait, use:
CALL WAIT.bat &whole number of seconds without quotes&
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If you've got
on your system, you can just execute this command:
powershell -command "Start-Sleep -s 1"
Edit: from , people raised an issue where the amount of time powershell takes to start is significant compared to how long you're trying to wait for. If the accuracy of the wait time is important (ie a second or two extra delay is not acceptable), you can use this approach:
powershell -command "$sleepUntil = [DateTime]::Parse('%date% %time%').AddSeconds(5); $sleepDuration = $sleepUntil.Subtract((get-date)).TotalM start-sleep -m $sleepDuration"
This takes the time when the windows command was issued, and the powershell script sleeps until 5 seconds after that time. So as long as powershell takes less time to start than your sleep duration, this approach will work (it's around 600ms on my machine).
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has always included this. At least since Windows 2000.
Also, the Cygwin package has a sleep - plop that into your PATH and include the cygwin.dll (or whatever it's called) and way to go!
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timeout /t &seconds& &options&
For example, to make the script perform a non-uninterruptible 2-second wait:
timeout /t 2 /nobreak &NUL
Which means the script will wait 2 seconds before continuing.
By default, a keystroke will interrupt the timeout, so use the /nobreak switch if you don't want the user to be able to interrupt (cancel) the wait. Furthermore, the timeout will provide per-second notifications to notify the user how
this can be removed by piping the command to NUL.
, the timeout command is only available on Windows 7 and above. Furthermore, the ping command uses less processor time than timeout. I still believe in using timeout where possible, though, as it is more readable than the ping 'hack'. Read more .
I added to it to handle the day and also enable it to handle
(%TIME% outputs H:MM:SS.CC):
SET DELAYINPUT=%1
SET /A DAYS=DELAYINPUT/8640000
SET /A DELAYINPUT=DELAYINPUT-(DAYS*864000)
::Get ending centisecond (10 milliseconds)
FOR /F "tokens=1-4 delims=:." %%A IN ("%TIME%") DO SET /A H=%%A, M=1%%B%%100, S=1%%C%%100, X=1%%D%%100, ENDING=((H*60+M)*60+S)*100+X+DELAYINPUT
SET /A DAYS=DAYS+ENDING/8640000
SET /A ENDING=ENDING-(DAYS*864000)
::Wait for such a centisecond
:delay_wait
FOR /F "tokens=1-4 delims=:." %%A IN ("%TIME%") DO SET /A H=%%A, M=1%%B%%100, S=1%%C%%100, X=1%%D%%100, CURRENT=((H*60+M)*60+S)*100+X
IF DEFINED LASTCURRENT IF %CURRENT% LSS %LASTCURRENT% SET /A DAYS=DAYS-1
SET LASTCURRENT=%CURRENT%
IF %CURRENT% LSS %ENDING% GOTO delay_wait
IF %DAYS% GTR 0 GOTO delay_wait
I have been using this C# sleep program. It might be more convenient for you if C# is your preferred language:
using System.Collections.G
using System.L
using System.T
using System.T
namespace sleep
class Program
static void Main(string[] args)
if (args.Length == 1)
double time = Double.Parse(args[0]);
Thread.Sleep((int)(time*1000));
Console.WriteLine("Usage: sleep &seconds&\nExample: sleep 10");
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The usage of
is good, as long as you just want to "wait for a bit". This since you are dependent on other functions underneath, like your network working and the fact that there is nothing answering on 127.0.0.1. ;-)
Maybe it is not very likely it fails, but it is not impossible...
If you want to be sure that you are waiting exactly the specified time, you should use the sleep functionality (which also have the advantage that it doesn't use CPU power or wait for a network to become ready).
To find an already made executable for sleep is the most convenient way. Just drop it into your Windows folder or any other part of your standard path and it is always available.
Otherwise, if you have a compiling environment you can easily make one yourself.
The Sleep function is available in kernel32.dll, so you just need to use that one. :-)
For VB / VBA declare the following in the beginning of your source to declare a sleep function:
private Declare Sub Sleep Lib "kernel32" Alias "Sleep" (byval dwMilliseconds as Long)
[DllImport("kernel32.dll")]
static extern void Sleep(uint dwMilliseconds);
You'll find here more about this functionality (available since Windows 2000) in
In standard C, sleep() is included in the standard library and in Microsoft's Visual Studio C the function is named Sleep(), if memory serves me. ;-) Those two takes the argument in seconds, not in milliseconds as the two previous declarations.
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Even more lightweight than the Python solution is a Perl
one-liner.
To sleep for seven seconds put this in the BAT script:
perl -e "sleep 7"
This solution only provides a resolution of one second.
If you need higher resolution then use the Time::HiRes
module from CPAN. It provides usleep() which sleeps in
microseconds and nanosleep() which sleeps in nanoseconds
(both functions takes only integer arguments). See the
Stack&Overflow question
for further details.
I have used
for many years. It is very easy to
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The best solution that should work on all Windows versions after Windows 2000 would be:
timeout numbersofseconds /nobreak & nul
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Or command line Python, for example, for 6 and a half seconds:
python -c "time.sleep(6.5)"
The pathping.exe can sleep less than second.
setlocal EnableDelayedExpansion
echo !TIME! & pathping localhost -n -q 1 -p %~1 2&&1 & nul & echo !TIME!
& sleep 10
17:01:33,57
17:01:33,60
& sleep 20
17:03:56,54
17:03:56,58
& sleep 50
17:04:30,80
17:04:30,87
& sleep 100
17:07:06,12
17:07:06,25
& sleep 200
17:07:08,42
17:07:08,64
& sleep 500
17:07:11,05
17:07:11,57
& sleep 800
17:07:18,98
17:07:19,81
& sleep 1000
17:07:22,61
17:07:23,62
& sleep 1500
17:07:27,55
17:07:29,06
I am impressed with this one:
choice /n /c y /d y /t 5 & NUL
Technically, you're telling the choice command to accept only y. It defaults to y, to do so in 5 seconds, to draw no prompt, and to dump anything it does say to NUL (like null terminal on Linux).
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From Windows&Vista on you have the
commands, but to use them on Windows&XP or Windows Server 2003, you'll need the .
you have a good overview of sleep alternatives (the ping approach is the most popular as it will work on every Windows machine), but there's (at least) one not mentioned which (ab)uses the
(Time Service) command:
w32tm /stripchart /computer:localhost /period:1 /dataonly /samples:N
Where you should replace the N with the seconds you want to pause. Also, it will work on every Windows system without prerequisites.
Typeperf can also be used:
typeperf "\System\Processor Queue Length" -si N -sc 1 &nul
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You can also use a .vbs file to do specific timeouts:
The code below creates the .vbs file. Put this near the top of you rbatch code:
echo WScript.sleep WScript.Arguments(0) &"%cd%\sleeper.vbs"
The code below then opens the .vbs and specifies how long to wait for:
start /WAIT "" "%cd%\sleeper.vbs" "1000"
In the above code, the "1000" is the value of time delay to be sent to the .vbs file in milliseconds, for example, 1000&ms = 1&s. You can alter this part to be however long you want.
The code below deletes the .vbs file after you are done with it. Put this at the end of your batch file:
del /f /q "%cd%\sleeper.vbs"
And here is the code all together so it's easy to copy:
echo WScript.sleep WScript.Arguments(0) &"%cd%\sleeper.vbs"
start /WAIT "" "%cd%\sleeper.vbs" "1000"
del /f /q "%cd%\sleeper.vbs"
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You can get fancy by putting the PAUSE message in the title bar:
SET TITLETEXT=Sleep
TITLE %TITLETEXT%
CALL :sleep 5
:: Function Section
:sleep ARG
ECHO Pausing...
FOR /l %%a in (%~1,-1,1) DO (TITLE Script %TITLETEXT% -- time left^
%%as&PING.exe -n 2 -w &NUL)
:: End of script
::this is EOF
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This was tested on Windows&XP SP3 and Windows&7 and uses CScript. I put in some safe guards to avoid del "" prompting. (/q would be dangerous)
Wait one second:
sleepOrDelayExecution 1000
Wait 500 ms and then run stuff after:
sleepOrDelayExecution 500 dir \ /s
sleepOrDelayExecution.bat:
if "%1" == "" goto end
if NOT %1 GTR 0 goto end
set sleepfn="%temp%\sleep%random%.vbs"
echo WScript.Sleep(%1) &%sleepfn%
if NOT %sleepfn% == "" if NOT EXIST %sleepfn% goto end
cscript %sleepfn% &nul
if NOT %sleepfn% == "" if EXIST %sleepfn% del %sleepfn%
for /f "usebackq tokens=1*" %%i in (`echo %*`) DO @ set params=%%j
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ping -n X 127.0.0.1 & nul
Replace X with the number of seconds + 1.
For example, if you were to wait 10 seconds, replace X with 11. To wait 5 seconds, use 6.
Read earlier answers for milliseconds.
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