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added hacker mode and evil mode
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bigsketti
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21
README.md
21
README.md
@ -1,6 +1,19 @@
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This is a basic terminal written in plain ol' C. I'm writing this to dip my toes into C and learn a little about systems development.
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This will never reach the level of bash or zsh, I'm a college student without that kind of time or knowledge.
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# Welcome to cShell
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THIS ONLY WORKS ON LINUX, IF FOR WHATEVER REASON YOU WANT TO PLAY WITH THIS AND YOURE ON WINDOWS YOU MUST USE WSL (Windows subsystem for Linux)
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**cShell** is a compact terminal written in **C**.
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No need to compile the source code to run, simply download the binary from the repository. It always contains the most recently compiled version of cShell.
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This cutting-edge shell for Linux includes powerful features such as:
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- Native ASCII clam
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- Easy navigation, creation, and deletion of files and directories
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- **Hacker mode**
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- **Evil mode**
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- And so much more…
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---
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**cShell** is actively being developed at a **very slow** pace. College and work take up a lot of time, and this project is just my way of dipping my toes into **C** and learning about shells and **syscalls**.
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While **cShell** is clearly **better** than other shells like **Bash** or **ZShell**, it's not quite as feature-rich. I wouldn’t recommend replacing your current shell program with it—unless, of course, you *really* hate yourself. In that case, I am not liable for any damage to your psyche incurred during the use of this program.
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---
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18
handleJSON.c
18
handleJSON.c
@ -37,13 +37,13 @@ void advancePosition(int *pos, char **currentChar, char *input[]) {
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}
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}
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void skipWhiteSpace(int *pos, char **currentChar, char *input) {
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void skipWhiteSpace(int *pos, char **currentChar, char *input[]) {
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if (**currentChar != "\0" && is_space(**currentChar)) {
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advancePosition(pos, currentChar, input);
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}
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}
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Token number(int *pos, char **currentChar, char *input) {
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Token number(int *pos, char **currentChar, char *input[]) {
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char value[100] = "";
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int i = 0;
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@ -64,7 +64,7 @@ Token number(int *pos, char **currentChar, char *input) {
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}
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Token identifier(int *pos, char **currentChar, char *input) {
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Token identifier(int *pos, char **currentChar, char *input[]) {
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char value[100] = "";
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int i = 0;
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@ -84,9 +84,17 @@ Token identifier(int *pos, char **currentChar, char *input) {
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return token;
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}
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void tokenizeJSON(char *input) {
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void tokenizeJSON(int *pos, char **currentChar, char *input[]) {
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// TODO: finish this after token type functions
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while (currentChar != '\0') {
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if (isspace(currentChar)) {
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skipWhiteSpace(pos, currentChar, input);
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}
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if (isdigit(currentChar)) {
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return number(pos, currentChar, input);
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}
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}
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}
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// TODO: make functions to handle types of tokens
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189
main.c
189
main.c
@ -10,6 +10,8 @@
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#define INPUT_SIZE 1024
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#define VERSION 0.1f
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// TODO: research tab completion, very big quality of life feature
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char *trimCWD(char *cwd) {
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char *token = strtok(cwd, "/");
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char *trimmedCWD = NULL;
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@ -98,6 +100,123 @@ void listDirectorys(const char *path) {
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printf(" ██████████ \n");
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}
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void handle_command(char **args, char **cwd, char **trimmedCWD) {
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if (args[0] == NULL) {
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return;
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}
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if (strcmp("exit", args[0]) == 0) {
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exit(0);
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}
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if (strcmp("help", args[0]) == 0) {
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printf("Welcome to cShell, my shitty terminal written in C\n\n");
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printClamShell();
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printf(
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"\nBuilt-in commands:\n"
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"\texit\n"
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"\thelp\n"
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"\tversion\n"
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"\tcd <dir name>\n"
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"\tmkdir <dir name>\n"
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"\trmdir <dir name>\n"
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"\tmkfile <file name>\n"
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"\trmfile <file name>\n"
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"\tls <optional: path>\n"
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"\tmode <-arg>\n"
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"\t\tnormal mode: -n\n"
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"\t\tevil mode: -e\n"
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"\t\thacker mode: -h\n\n"
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);
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return;
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}
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if (strcmp("version", args[0]) == 0) {
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printf("cShell version: %f\n", VERSION);
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return;
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}
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if (strcmp("cd", args[0]) == 0) {
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if (args[1] == NULL) {
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fprintf(stderr, "Missing argument for command \"cd\"\n");
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} else {
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if (chdir(args[1]) != 0) {
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perror("chdir failed\n");
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} else {
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free(*cwd);
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*cwd = getCWD();
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*trimmedCWD = trimCWD(*cwd);
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}
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}
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return;
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}
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if (strcmp("mkfile", args[0]) == 0) {
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FILE *file = fopen(args[1], "w");
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if (file == NULL) {
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perror("Error making file");
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} else {
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printf("success\n");
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}
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return;
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}
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if (strcmp("mkdir", args[0]) == 0) {
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if (mkdir(args[1], 0777) != 0) {
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perror("Error making directory");
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} else {
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printf("success\n");
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}
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return;
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}
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if (strcmp("rmfile", args[0]) == 0) {
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if (remove(args[1]) != 0) {
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perror("Error removing file");
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} else {
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printf("success\n");
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}
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return;
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}
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if (strcmp("rmdir", args[0]) == 0) {
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if (rmdir(args[1]) != 0) {
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perror("Error removing directory");
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} else {
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printf("success\n");
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}
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return;
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}
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if (strcmp("ls", args[0]) == 0) {
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const char *path = args[1] ? args[1] : ".";
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listDirectorys(path);
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return;
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}
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if (strcmp("mode", args[0]) == 0) {
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if (strcmp("-h", args[1]) == 0) {
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printf("\033[32m");
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printf("Hacker mode activated\n");
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return;
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} else if (strcmp("-e", args[1]) == 0) {
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printf("\033[31m");
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printf("Evil mode activated\n");
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return;
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} else if (strcmp("-n", args[1]) == 0) {
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printf("\033[0m");
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printf("Normal mode activated\n");
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return;
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} else {
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printf("Invalid arguement, type \"help\" for help\n");
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return;
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}
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}
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// execute the external command
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execute(args);
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}
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int main() {
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char input[INPUT_SIZE];
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char *args[100];
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@ -120,75 +239,7 @@ int main() {
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parse_input(input, args);
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// built in command checks
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// TODO: add commands to handle creating and deleting users
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// also modify permissions for admin users and regular users
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// This will have to come after i finish the JSON parser
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// TODO: refactor this to a switch case one day im bored
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// these else ifs are getting ugly and its just gonna get worse
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if (strcmp("exit", args[0]) == 0) {
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exit(0);
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} else if (strcmp("help", args[0]) == 0) {
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printf("Welcome to cShell, my shitty terminal written in C\n\n");
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printClamShell();
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printf("\nBuilt-in commands:\n\texit\n\thelp\n\tcd [dir name]\n\tversion\n\tmkdir [dir name]\n\trmdir [dir name]\n\tmkfile [file name]\n\trmfile [file name]\n\tls [path optional]\n\n");
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continue;
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} else if (strcmp("version", args[0]) == 0) {
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printf("cShell version: %f\n", VERSION);
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continue;
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} else if (strcmp("cd", args[0]) == 0) {
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if (args[1] == NULL) {
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fprintf(stderr, "Missing argument for command \"cd\"\n");
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} else {
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if (chdir(args[1]) != 0) {
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perror("chdir failed\n");
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} else {
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free(cwd);
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cwd = getCWD();
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trimmedCWD = trimCWD(cwd);
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}
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}
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continue;
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} else if (strcmp("mkfile", args[0]) == 0) {
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FILE *file = fopen(args[1], "w");
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if (file == NULL) {
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perror("Error making file");
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} else { printf("success\n"); }
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continue;
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} else if (strcmp("mkdir", args[0]) == 0) {
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if (mkdir(args[1], 0777) != 0) {
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perror("Error making directory");
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} else { printf("success\n"); }
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continue;
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} else if (strcmp("rmfile", args[0]) == 0) {
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if (remove(args[1]) != 0) {
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perror("Error removing file");
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} else { printf("success\n"); }
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continue;
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} else if (strcmp("rmdir", args[0]) == 0) {
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if (rmdir(args[1]) != 0) {
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perror("Error removing directory");
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} else { printf("success\n"); }
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continue;
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} else if (strcmp("ls", args[0]) == 0) {
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const char *path = args[1] ? args[1] : ".";
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listDirectorys(path);
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continue;
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}
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// execute the external command
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execute(args);
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handle_command(args, &cwd, &trimmedCWD);
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}
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free(cwd);
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return 0;
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