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Revision as of 12:30, 2 November 2018
Sleep random seconds in programming
MS-DOS
batch file - .bat random timeout - Stack Overflow
- %RANDOM% returns an integer between 0 and 32767.
- 60 is the range of values you want: 0 to 60.
- 32768 is the range of values returned by %RANDOM% (0 to 32767).
- 5 is the minimum value you want. The original range of values you want 0 to 60 became 5 ~ 65.
- ping local address[1]
REM print current date & time ECHO %date% %time% REM sleep 5 ~ 65 seconds SET /a timeout=%RANDOM% * 60 / 32768 + 5 ping 127.0.0.1 -n %timeout% > nul REM print current date & time ECHO %date% %time%