#!/bin/sh
# delay <milliseconds>
# MacBook Pro, 13 Inch, Circa August 2012, OSX 10.7.5, using sh and limited /bin/echo command.
clear

# Use /bin/echo here for minimalist echo command.
/bin/echo '/* delay.c */
/* Usage:- delay <milliseconds[0 to 1000000]> */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

int main(int argc, char *argv[])
{
	unsigned int milliseconds;
	milliseconds = 0;

	/* This allows for NULL millisecond argument and more arguments too. */
	if (argc <= 1 || argc >= 3)
	{
		printf ("\nUsage:- delay <milliseconds[0 to 1000000]>\n\n");
		return 1;
	}

	/* Check for number of characters, no less than 1 and no more than 7. */
	if (strlen(argv[1]) <= 0 || strlen(argv[1]) >= 8) (argv[1]) = "0";

	/* Characters in function atoi() returns integer 0. */
	milliseconds = atoi(argv[1]);

	/* Finally, ONLY allow 0 to 1000000 range. */
	if (milliseconds <= 0 || milliseconds >= 1000001) milliseconds = 0;

	usleep (milliseconds * 1000);
	return 0;
}' > /tmp/delay.c
echo "Show C source..."
cat /tmp/delay.c
echo "Compile the C source..."
gcc /tmp/delay.c -o /tmp/delay
ls -l /tmp/delay*
echo "Delay for 3 seconds - /tmp/delay 3000..."
/tmp/delay 3000
echo "Return code is $?..."
echo "Now show error report - /tmp/delay..."
/tmp/delay
echo "Return code is $?..."

Last login: Mon Jul 11 22:09:24 on ttys000
AMIGA:barrywalker~> cd Desktop/Code/Shell
AMIGA:barrywalker~/Desktop/Code/Shell> ./mS_delay.sh


Show C source...
/* delay.c */
/* Usage:- delay <milliseconds[0 to 1000000]> */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

int main(int argc, char *argv[])
{
	unsigned int milliseconds;
	milliseconds = 0;

	/* This allows for NULL millisecond argument and more arguments too. */
	if (argc <= 1 || argc >= 3)
	{
		printf ("\nUsage:- delay <milliseconds[0 to 1000000]>\n\n");
		return 1;
	}

	/* Check for number of characters, no less than 1 and no more than 7. */
	if (strlen(argv[1]) <= 0 || strlen(argv[1]) >= 8) (argv[1]) = "0";

	/* Characters in function atoi() returns integer 0. */
	milliseconds = atoi(argv[1]);

	/* Finally, ONLY allow 0 to 1000000 range. */
	if (milliseconds <= 0 || milliseconds >= 1000001) milliseconds = 0;

	usleep (milliseconds * 1000);
	return 0;
}
Compile the C source...
-rwxr-xr-x  1 barrywalker  wheel  8824 11 Jul 22:14 /tmp/delay
-rw-r--r--  1 barrywalker  wheel   802 11 Jul 22:14 /tmp/delay.c
Delay for 3 seconds - /tmp/delay 3000...
Return code is 0...
Now show error report - /tmp/delay...

Usage:- delay <milliseconds[0 to 1000000]>

Return code is 1...
AMIGA:barrywalker~/Desktop/Code/Shell> _

$ shellcheck myscript
 
Line 7:
/bin/echo '/* delay.c */
          ^-- SC2028: echo won't expand escape sequences. Consider printf.

$ _

#!/usr/bin/python
# fpt.py <floating point time>
import time
import sys
fpt=float(sys.argv[1])
time.sleep(fpt)
exit(0)