#include <sys/types.h>
#include <sys/stat.h>
main(argc, argv)
int argc;
char **argv;
{
argc--, argv++;
while (argc > 0) {
struct stat stb; int c, f;
if (stat(*argv, &stb) < 0)
goto bad;
if (chmod(*argv, stb.st_mode | 0200) < 0)
goto bad;
f = open(*argv, 2);
if (f < 0)
goto bad;
lseek(f, 0, 0);
read(f, &c, 1);
lseek(f, 0, 0);
write(f, &c, 1);
close(f);
chmod(*argv, stb.st_mode);
argc--, argv++;
continue;
bad:
perror(*argv);
argc--, argv++;
continue;
}
}