Custom Stat Printing The Parameters Of A File (Code is not mine, check out Chris Brown's System Programming lessons)

custom_stat.c

#include <stdio.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <time.h>

int main(int argc, char * argv[])
{
	struct stat sb;

	char *filetype[] = { 	
		"unknown",	"FIFO",		"character device",	"unknown",	"directory",
		"unknown",	"block device",	"unknown",		"file",		"unknown",
		"symlink",	"unknown",	"socket"
	};

	if (argc != 2) {
		fprintf(stderr, "usage: listfile filename\n");
		exit(1);
	}
	
	if ( stat(argv[1], &sb) < 0 ) {
		perror(argv[1]);
		exit(2);
	}

	printf("file type:		%s\n", filetype[ (sb.st_mode >> 12) & 017 ]);
	printf("permissions:		%c%c%c%c%c%c%c%c%c\n",
		(sb.st_mode & S_IRUSR) ? 'r' : '-',
		(sb.st_mode & S_IWUSR) ? 'w' : '-',
		(sb.st_mode & S_IXUSR) ? 'x' : '-',
		(sb.st_mode & S_IRGRP) ? 'r' : '-',
		(sb.st_mode & S_IWGRP) ? 'w' : '-',
		(sb.st_mode & S_IXGRP) ? 'x' : '-',
		(sb.st_mode & S_IROTH) ? 'r' : '-',
		(sb.st_mode & S_IWOTH) ? 'w' : '-', 
		(sb.st_mode & S_IXOTH) ? 'x' : '-'
	);
	
	printf("last accessed:		%s", ctime(&sb.st_atime));
	printf("last modified:		%s", ctime(&sb.st_mtime));
	printf("last change  :		%s", ctime(&sb.st_ctime));

	return 0;
}

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