Sleep - Revision history

Planetoid: /* Related */

2024-02-20T16:33:25Z

← Older revision		Revision as of 00:33, 21 February 2024
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	* [https://blog.gtwang.org/windows/excel-random-number-generation-formula/ Excel 產生各種亂數的公式整理與函數教學 - G. T. Wang]		* [https://blog.gtwang.org/windows/excel-random-number-generation-formula/ Excel 產生各種亂數的公式整理與函數教學 - G. T. Wang]
	* [https://blog.miniasp.com/post/2009/06/24/Sleep-command-in-Batch 如何在批次檔(Batch)中實現 sleep 命令讓任務暫停執行 n 秒 \| The Will Will Web]		* [https://blog.miniasp.com/post/2009/06/24/Sleep-command-in-Batch 如何在批次檔(Batch)中實現 sleep 命令讓任務暫停執行 n 秒 \| The Will Will Web]
			* [https://errerrors.blogspot.com/2024/02/implement-randbetween-using-round.html Excel 使用 RAND 函數實作 RANDBETWEEN 函數]

	[[Category:Programming]] [[Category:PHP]] [[Category:MS-DOS]] [[Category:Bash]] [[Category:Tool]]		[[Category:Programming]] [[Category:PHP]] [[Category:MS-DOS]] [[Category:Bash]] [[Category:Tool]]

Planetoid: /* Approach 1: %RANDOM% + ping local */

2024-02-20T16:32:49Z

Approach 1: %RANDOM% + ping local

← Older revision		Revision as of 00:32, 21 February 2024
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	BAT file:		BAT file:
	<~~pre~~>		<syntaxhighlight lang="Windows batch files">
	REM print current date & time		REM print current date & time
	ECHO %date% %time%		ECHO %date% %time%
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	REM print current date & time		REM print current date & time
	ECHO %date% %time%		ECHO %date% %time%
	</~~pre~~>		</syntaxhighlight>

	Instruction<ref>[https://stackoverflow.com/questions/8258087/bat-random-timeout batch file - .bat random timeout - Stack Overflow]</ref>		Instruction<ref>[https://stackoverflow.com/questions/8258087/bat-random-timeout batch file - .bat random timeout - Stack Overflow]</ref>

Unknown user: /* Approach 1: %RANDOM% + ping local */

2024-02-01T15:38:51Z

Approach 1: %RANDOM% + ping local

← Older revision		Revision as of 23:38, 1 February 2024
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	* 55 is the range of values you want: 5 to 60.		* 55 is the range of values you want: 5 to 60.
	* 32767 is the range of values returned by {{kbd \| key=<nowiki>%RANDOM%</nowiki>}} (0 to 32767).		* 32767 is the range of values returned by {{kbd \| key=<nowiki>%RANDOM%</nowiki>}} (0 to 32767).
	* 5 is the minimum value you want. The original range of values is '0 to 60'. After plus 5 the range became '5 ~ 65'.		* 5 is the minimum value you want. The original range of values is '0 to 55'. After plus 5 the range became '5 ~ 65'.
	* ping local address: {{kbd \| key=<nowiki>/n <Count></nowiki>}} "Specifies the number of echo Request messages sent. The default is 4."<ref>[https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/ping time]</ref><ref>[https://stackoverflow.com/questions/735285/how-to-wait-in-a-batch-script windows xp - How to wait in a batch script? - Stack Overflow]</ref>		* ping local address: {{kbd \| key=<nowiki>/n <Count></nowiki>}} "Specifies the number of echo Request messages sent. The default is 4."<ref>[https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/ping time]</ref><ref>[https://stackoverflow.com/questions/735285/how-to-wait-in-a-batch-script windows xp - How to wait in a batch script? - Stack Overflow]</ref>

Unknown user at 15:27, 1 February 2024

2024-02-01T15:27:20Z

← Older revision		Revision as of 23:27, 1 February 2024
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	Sleep random seconds in programming		Sleep random seconds in programming

	{{LanguageSwitcher \| content = [[Sleep \| EN]], [[Sleep in ~~Madarian~~ \| 漢字]] }}		{{LanguageSwitcher \| content = [[Sleep \| EN]], [[Sleep in Mandarin \| 漢字]] }}

	== MS-DOS on Windows ==		== MS-DOS on Windows ==

Unknown user at 05:53, 30 January 2024

2024-01-30T05:53:27Z

← Older revision		Revision as of 13:53, 30 January 2024
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	Sleep random seconds in programming		Sleep random seconds in programming

			{{LanguageSwitcher \| content = [[Sleep \| EN]], [[Sleep in Madarian \| 漢字]] }}

	== MS-DOS on Windows ==		== MS-DOS on Windows ==

Unknown user: /* BASH example: download file and sleep random seconds between 1 ~ 7 seconds */

2023-06-06T06:05:22Z

BASH example: download file and sleep random seconds between 1 ~ 7 seconds

← Older revision		Revision as of 14:05, 6 June 2023
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	=== BASH example: download file and sleep random seconds between 1 ~ 7 seconds ===		=== BASH example: download file and sleep random seconds between 1 ~ 7 seconds ===

			The following script checks if a specific file exists in a defined path. If the file doesn't exist, it downloads the file from a provided URL and then pauses for a random duration between 1 and 7 seconds. If the file already exists, it simply prints a message stating that the file was found and the download was skipped.

	<pre>		<pre>
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	</pre>		</pre>

	~~Same~~ command		The same command can be written on one line:
	<pre>		<pre>
	if [ ! -f /path/to/paper.pdf ]; then curl "https://website/to/pdf" -L -o /path/to/paper.pdf; sleep $((1 + RANDOM % 7)); else echo "File found. Download skipped."; fi		if [ ! -f /path/to/paper.pdf ]; then curl "https://website/to/pdf" -L -o /path/to/paper.pdf; sleep $((1 + RANDOM % 7)); else echo "File found. Download skipped."; fi

Unknown user: /* BASH */

2023-06-06T06:03:04Z

BASH

← Older revision		Revision as of 14:03, 6 June 2023
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	</pre>		</pre>

			=== BASH example: download file and sleep random seconds between 1 ~ 7 seconds ===

			<pre>
			if [ ! -f /path/to/paper.pdf ]
			then
			curl "https://website/to/pdf" -L -o /path/to/paper.pdf
			sleep $((1 + RANDOM % 7))
			else
			echo "File found. Download skipped."
			fi
			</pre>

			Same command
			<pre>
			if [ ! -f /path/to/paper.pdf ]; then curl "https://website/to/pdf" -L -o /path/to/paper.pdf; sleep $((1 + RANDOM % 7)); else echo "File found. Download skipped."; fi
			</pre>

			References

			* [https://www.cyberciti.biz/faq/bash-check-if-file-does-not-exist-linux-unix/ How to check if file does not exist in Bash - nixCraft]

	== PHP ==		== PHP ==

Unknown user: /* Approach 3: TIMEOUT */

2023-02-06T04:32:41Z

Approach 3: TIMEOUT

← Older revision		Revision as of 12:32, 6 February 2023
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	BAT file:		BAT file:
	<pre>		<pre>
	SET /a timeout=%RANDOM% * 60 / ~~32768~~ + 5		SET /a timeout=%RANDOM% * 55 / 32767 + 5
	TIMEOUT %timeout%		TIMEOUT %timeout%

Unknown user: /* Approach 2: sleep package of CygWin */

2023-02-06T04:32:23Z

Approach 2: sleep package of CygWin

← Older revision		Revision as of 12:32, 6 February 2023
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	ECHO %date% %time%		ECHO %date% %time%

	REM sleep 5 ~ 65 seconds		REM sleep 5 ~ 60 seconds
	SET /a timeout=%RANDOM% * 60 / ~~32768~~ + 5		SET /a timeout=%RANDOM% * 55 / 32767 + 5
	C:\cygwin64\bin\sleep.exe %timeout%		C:\cygwin64\bin\sleep.exe %timeout%

Unknown user: /* Approach 1: %RANDOM% + ping local */

2023-02-06T04:31:19Z

Approach 1: %RANDOM% + ping local

← Older revision		Revision as of 12:31, 6 February 2023
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	=== Approach 1: %RANDOM% + ping local ===		=== Approach 1: %RANDOM% + ping local ===
	Purpose		Purpose
	* Sleep random seconds between 5 ~ 65 seconds		* Sleep random seconds between 5 ~ 60 seconds

	BAT file:		BAT file:
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	ECHO %date% %time%		ECHO %date% %time%

	REM sleep 5 ~ 65 seconds		REM sleep 5 ~ 60 seconds
	SET /a timeout=%RANDOM% * 60 / ~~32768~~ + 5		SET /a timeout=%RANDOM% * 55 / 32767 + 5
	ping 127.0.0.1 -n %timeout% > nul		ping 127.0.0.1 -n %timeout% > nul

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	Instruction<ref>[https://stackoverflow.com/questions/8258087/bat-random-timeout batch file - .bat random timeout - Stack Overflow]</ref>		Instruction<ref>[https://stackoverflow.com/questions/8258087/bat-random-timeout batch file - .bat random timeout - Stack Overflow]</ref>
	* {{kbd \| key=<nowiki>%RANDOM%</nowiki>}} returns an integer between 0 and 32767<ref>[https://ss64.com/nt/syntax-random.html Random Numbers - Windows CMD - SS64.com]</ref>.		* {{kbd \| key=<nowiki>%RANDOM%</nowiki>}} returns an integer between 0 and 32767<ref>[https://ss64.com/nt/syntax-random.html Random Numbers - Windows CMD - SS64.com]</ref>.
	* 60 is the range of values you want: 0 to 60.		* 55 is the range of values you want: 5 to 60.
	* ~~32768~~ is the range of values returned by {{kbd \| key=<nowiki>%RANDOM%</nowiki>}} (0 to 32767).		* 32767 is the range of values returned by {{kbd \| key=<nowiki>%RANDOM%</nowiki>}} (0 to 32767).
	* 5 is the minimum value you want. The original range of values ~~you want~~ '0 to 60' became '5 ~ 65'.		* 5 is the minimum value you want. The original range of values is '0 to 60'. After plus 5 the range became '5 ~ 65'.
	* ping local address: {{kbd \| key=<nowiki>/n <Count></nowiki>}} "Specifies the number of echo Request messages sent. The default is 4."<ref>[https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/ping time]</ref><ref>[https://stackoverflow.com/questions/735285/how-to-wait-in-a-batch-script windows xp - How to wait in a batch script? - Stack Overflow]</ref>		* ping local address: {{kbd \| key=<nowiki>/n <Count></nowiki>}} "Specifies the number of echo Request messages sent. The default is 4."<ref>[https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/ping time]</ref><ref>[https://stackoverflow.com/questions/735285/how-to-wait-in-a-batch-script windows xp - How to wait in a batch script? - Stack Overflow]</ref>