1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/sleep.c	Thu Aug 25 08:53:01 2011 +0300
     1.3 @@ -0,0 +1,20 @@
     1.4 +/*! cc -o sleep sleep.c */
     1.5 +#include <stdio.h>
     1.6 +#include <stdlib.h>
     1.7 +#include <ctype.h>
     1.8 +#include <unistd.h>
     1.9 +
    1.10 +int main(int argc, char **argv)
    1.11 +{
    1.12 +	if(argc < 2) {
    1.13 +		puts("seconds argument missing...");
    1.14 +		return 1;
    1.15 +	}
    1.16 +	if(!isdigit(argv[1][0])) {
    1.17 +		fprintf(stderr, "invalid argument: %s\n", argv[1]);
    1.18 +		return 1;
    1.19 +	}
    1.20 +	
    1.21 +	sleep(atoi(argv[1]));
    1.22 +	return 0;
    1.23 +}