src/world/usr.bin/unlink/src/unlink.c

88 lines
2.4 KiB
C

/*
*----------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <jeang3nie@HitchHiker-Linux.org> wrote this file. As long as you
* retain this notice you can do whatever you want with this stuff. If
* we meet some day, and you think this stuff is worth it, you can buy
* me a beer in return.
* ---------------------------------------------------------------------
* ______ _______ _ _________
* ( __ \ ( ___ )( ( /|( )\__ __/
* | ( \ )| ( ) || \ ( ||/ ) (
* | | ) || | | || \ | | | |
* | | | || | | || (\ \) | | |
* | | ) || | | || | \ | | |
* | (__/ )| (___) || ) \ | | |
* (______/ (_______)|/ )_) )_(
*
* _______ _______ _ _________ _______
* ( ____ )( ___ )( \ /|\__ __/( ____ \
* | ( )|| ( ) || \ ( | ) ( | ( |/
* | (____)|| (___) || \ | | | | | |
* | _____)| ___ || (\ \) | | | | |
* | ( | ( ) || | \ | | | | |
* | ) | ) ( || ) \ |___) (___| (____|\
* |/ |/ \||/ \_)\_______/(_______/
*
*/
#define _XOPEN_SOURCE
#include <ctype.h> // isprint
#include <libgen.h> // basename
#include <stdio.h> // fprintf, printf
#include <stdlib.h> // exit
#include <unistd.h> // getopt, unlink
static const char *__progname;
int vflag;
static void usage() { fprintf(stderr, "usage: %s target name\n", __progname); }
int _unlinkit(char *file) {
// do the actual unlink
if (unlink(file) == 0) {
// verbose flag is set
if (vflag) {
fprintf(stderr, "unlink: %s\n", file);
}
return 0;
} else {
perror("unlink");
exit(EXIT_FAILURE);
}
}
int main(int argc, char *argv[]) {
int index;
int c;
__progname = basename(argv[0]);
while ((c = getopt(argc, argv, "hv")) != -1)
switch (c) {
case 'h':
usage();
return 0;
break;
case 'v':
vflag = 1;
break;
case '?':
if (isprint(optopt)) {
usage();
exit(1);
}
default:
usage();
}
// no arguments supplied
if (argv[optind] == NULL) {
printf("Mandatory argument(s) missing\n");
exit(1);
}
for (index = optind; index < argc; index++)
_unlinkit(argv[index]);
}