diff options
Diffstat (limited to 'src/dirname.c')
-rw-r--r-- | src/dirname.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/dirname.c b/src/dirname.c new file mode 100644 index 0000000..982606a --- /dev/null +++ b/src/dirname.c @@ -0,0 +1,28 @@ +#include <unistd.h> +#include <string.h> +#include <libgen.h> + +static int my_write(int fd, const char *s, size_t l) +{ + if (!l) l = strlen(s); + while (l) { + ssize_t n = write(fd, s, l); + if (n<0) return -1; + s += n; l -= n; + } + return 0; +} + +int main(int argc, char *argv[]) +{ + char *s; + if (argc != 2) { + my_write(2, argv[0], 0); + my_write(2, ": missing operand\n", 0); + return 1; + } + s = dirname(argv[1]); + if (my_write(1, s, 0)<0 || my_write(1, "\n", 1)<0) + return 1; + return 0; +} |