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#include "internal.h" #include <stdio.h> const char sleep_usage[] = " NUMBER\n" "Pause for NUMBER seconds.\n"; extern int sleep_main(int argc, char * * argv) { if ( (argc < 2) || (**(argv+1) == '-') ) { usage( sleep_usage ); } if ( sleep(atoi(*(++argv))) != 0 ) { perror( "sleep"); exit (FALSE); } else exit (TRUE); }