delete comments and add usage in readme

README.md

@@ -4,25 +4,34 @@ rush is a minimalistic shell for Unix systems written in C.
 
 * Disclaimer: This project is for me to learn to write Unix syscalls, code might be inefficient, feel free to point out the mistakes and open a issue for that!
 
-# Preview
+## Preview
 [![Valid command](https://r2.e-z.host/3c62bb3a-a8a9-43f6-afd6-553646f51dc4/aqnpvvud.png)]()
 [![Invalid command](https://r2.e-z.host/3c62bb3a-a8a9-43f6-afd6-553646f51dc4/xf80dq0b.png)]()
 
-# Dependencies
+## Dependencies
 - gcc
 
-# Building
+## Building
 ```sh
 $ make
 $ sudo make install
 ```
 
-# Usage
+## Usage
 ```sh
 $ ./rush
+
+# > to redirect stdout
+# < to redirect stdin
+# 2> to redirect stderr
+# >> to append to file
+# & to run command in background
+# | to pipe
+# !! to repeat last command
+# >& to redirect both stdout and stderr
 ```
 
-# Features
+## Features
 - No dependencies except a compiler
 - Showing current time and directory with custom color
 - Syntax highlighting on valid commands using ANSI colors
@@ -35,7 +44,7 @@ $ ./rush
 - stdin, stdout, stderr redirect
 - Background jobs
 
-# Built in commands
+## Built in commands
 - cd
 - help
 - exit
@@ -45,12 +54,14 @@ $ ./rush
 - j
 - bg
 
-# Todo Features
+## Todo Features
 - Tab completion
 - Git integration
 - Allow arguments with space in double quotes
+- Underline file path if it exists
+- Aliases
 
-# Credits
+## Credits
 - [Tutorial - Write a shell in C](https://brennan.io/2015/01/16/write-a-shell-in-c/)
 - [dash](https://github.com/danishprakash/dash)
 - [Shell assignment](https://www.cs.cornell.edu/courses/cs414/2004su/homework/shell/shell.html)

commands.c

@@ -207,8 +207,6 @@ int export(char **args) {
                 return 0;
             }
         } else {
-            printf("rush: [arg0: %s] [arg1: %s]", args[0], args[1]);
-            printf("rush: [Variable: %s] [Value: %s]\n", variable, value);
             fprintf(stderr, "rush: Syntax error when setting environment variable\nUse \"export VARIABLE=VALUE\"\n");
             return 0;
         }
@@ -418,14 +416,12 @@ int execute_pipe(char ***args) {
     while (args[num_cmds] != NULL) {
         int num_args = 0;
         while (args[num_cmds][num_args] != NULL) {
-            //printf("args [%i]: %s\n", num_cmds, args[num_cmds][num_args]);
             num_args++;
         }
         num_cmds++;
     }
     
     for (int i = 0; i < num_cmds - 1; i++) {
-        //printf("i: %d\n", i);
         pipe(pipefd);
         if ((pid = fork()) == 0) {
             // then this (child)
@@ -445,7 +441,6 @@ int execute_pipe(char ***args) {
     }
 
     if ((pid = fork()) == 0) {
-       // printf("last command\n");
         dup2(in, STDIN_FILENO); // get input from pipe
         execute(args[num_cmds - 1]);
         exit(EXIT_SUCCESS);

job.c

@@ -54,9 +54,7 @@ job *get_job(int index) {
         return NULL;
     }
     for (int i = 0; i < index; i++) {
-        printf("current: %s\n", current->command);
         current = current->next;
-        printf("next: %s\n", current->command);
     }
     return current;
 }