Linux system utility commands in C programming language E.g. cp, mv

copy.c

/***
 * @author Dipankar Das
 * cc -o util copy.c
 * 
 * ./util cp <source> <destination>
 * 
 * ./util mv <source> <destination>
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

void __mv__(FILE* dest, FILE* src) {
	while (!feof(src)) {
		char ch = fgetc(src);
		fputc(ch, dest);
	}
}

void __cp__(FILE* dest, FILE* src) {
	while (!feof(src)) {
		char ch = fgetc(src);
		fputc(ch, dest);
	}
}

int main(int argc, char* argv[])
{
	FILE* src = NULL;
	FILE* dest = NULL;
	src = fopen(argv[2], "r");
	dest = fopen(argv[3], "w");
	if (strcmp(argv[1], "cp") == 0)
	{
		printf("copying\n");
		__cp__(dest, src);
	}
	else if (strcmp(argv[1], "mv") == 0)
	{
		__mv__(dest, src);
		printf("moving\n");
		// system("rm %s", argv[1]);
		char ss[512];
		memset(ss, '\0', sizeof(512));
		sprintf(ss, "rm %s", argv[2]);
		system(ss);
	}
	else
	{
		system("echo '❌'");
	}

	fclose(src);
	fclose(dest);
	return 0;
}