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Annotation of researchv10no/cmd/newer.c, revision 1.1.1.1

1.1       root        1: #include <sys/types.h>
                      2: #include <sys/stat.h>
                      3: 
                      4: /*
                      5:  *     newer x y
                      6:  *
                      7:  *     returns 0 if x exists and y does not, or if
                      8:  *     files x and y both exist and x was modified
                      9:  *     at least as recently as y, and nonzero otherwise.
                     10:  */
                     11: 
                     12: main (argc, argv)
                     13:        int argc;
                     14:        register int **argv;
                     15: {
                     16:        struct stat x, y;
                     17: 
                     18:        /* insist on exactly two args */
                     19:        if (argc != 3)
                     20:                return 1;
                     21:        
                     22:        /* does the first file exist? */
                     23:        if (stat (argv[1], &x) < 0)
                     24:                return 1;
                     25:        
                     26:        /* does the second file exist? */
                     27:        if (stat (argv[2], &y) < 0)
                     28:                return 0;
                     29:        
                     30:        /* fail if the first file is older than the second */
                     31:        if (x.st_mtime < y.st_mtime)
                     32:                return 1;
                     33:        
                     34:        /* otherwise, succeed */
                     35:        return 0;
                     36: }

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