brenns10 · Ma7mudramdan · May 18, 2026
diff --git a/.vscode/c_cpp_properties.json b/.vscode/c_cpp_properties.json
@@ -0,0 +1,18 @@
+{
+  "configurations": [
+    {
+      "name": "windows-gcc-x64",
+      "includePath": [
+        "${workspaceFolder}/**"
+      ],
+      "compilerPath": "C:/MinGW/bin/gcc.exe",
+      "cStandard": "${default}",
+      "cppStandard": "${default}",
+      "intelliSenseMode": "windows-gcc-x64",
+      "compilerArgs": [
+        ""
+      ]
+    }
+  ],
+  "version": 4
+}
diff --git a/.vscode/launch.json b/.vscode/launch.json
@@ -0,0 +1,24 @@
+{
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "C/C++ Runner: Debug Session",
+      "type": "cppdbg",
+      "request": "launch",
+      "args": [],
+      "stopAtEntry": false,
+      "externalConsole": true,
+      "cwd": "//wsl.localhost/Ubuntu/home/mahmoudramadan/linux-6.18.10/lsh/src",
+      "program": "//wsl.localhost/Ubuntu/home/mahmoudramadan/linux-6.18.10/lsh/src/build/Debug/outDebug",
+      "MIMode": "gdb",
+      "miDebuggerPath": "gdb",
+      "setupCommands": [
+        {
+          "description": "Enable pretty-printing for gdb",
+          "text": "-enable-pretty-printing",
+          "ignoreFailures": true
+        }
+      ]
+    }
+  ]
+}
diff --git a/.vscode/settings.json b/.vscode/settings.json
@@ -0,0 +1,59 @@
+{
+  "C_Cpp_Runner.cCompilerPath": "gcc",
+  "C_Cpp_Runner.cppCompilerPath": "g++",
+  "C_Cpp_Runner.debuggerPath": "gdb",
+  "C_Cpp_Runner.cStandard": "",
+  "C_Cpp_Runner.cppStandard": "",
+  "C_Cpp_Runner.msvcBatchPath": "C:/Program Files/Microsoft Visual Studio/VR_NR/Community/VC/Auxiliary/Build/vcvarsall.bat",
+  "C_Cpp_Runner.useMsvc": false,
+  "C_Cpp_Runner.warnings": [
+    "-Wall",
+    "-Wextra",
+    "-Wpedantic",
+    "-Wshadow",
+    "-Wformat=2",
+    "-Wcast-align",
+    "-Wconversion",
+    "-Wsign-conversion",
+    "-Wnull-dereference"
+  ],
+  "C_Cpp_Runner.msvcWarnings": [
+    "/W4",
+    "/permissive-",
+    "/w14242",
+    "/w14287",
+    "/w14296",
+    "/w14311",
+    "/w14826",
+    "/w44062",
+    "/w44242",
+    "/w14905",
+    "/w14906",
+    "/w14263",
+    "/w44265",
+    "/w14928"
+  ],
+  "C_Cpp_Runner.enableWarnings": true,
+  "C_Cpp_Runner.warningsAsError": false,
+  "C_Cpp_Runner.compilerArgs": [],
+  "C_Cpp_Runner.linkerArgs": [],
+  "C_Cpp_Runner.includePaths": [],
+  "C_Cpp_Runner.includeSearch": [
+    "*",
+    "**/*"
+  ],
+  "C_Cpp_Runner.excludeSearch": [
+    "**/build",
+    "**/build/**",
+    "**/.*",
+    "**/.*/**",
+    "**/.vscode",
+    "**/.vscode/**"
+  ],
+  "C_Cpp_Runner.useAddressSanitizer": false,
+  "C_Cpp_Runner.useUndefinedSanitizer": false,
+  "C_Cpp_Runner.useLeakSanitizer": false,
+  "C_Cpp_Runner.showCompilationTime": false,
+  "C_Cpp_Runner.useLinkTimeOptimization": false,
+  "C_Cpp_Runner.msvcSecureNoWarnings": false
+}
diff --git a/src/.vscode/c_cpp_properties.json b/src/.vscode/c_cpp_properties.json
@@ -0,0 +1,18 @@
+{
+  "configurations": [
+    {
+      "name": "windows-gcc-x64",
+      "includePath": [
+        "${workspaceFolder}/**"
+      ],
+      "compilerPath": "C:/MinGW/bin/gcc.exe",
+      "cStandard": "${default}",
+      "cppStandard": "${default}",
+      "intelliSenseMode": "windows-gcc-x64",
+      "compilerArgs": [
+        ""
+      ]
+    }
+  ],
+  "version": 4
+}
diff --git a/src/.vscode/launch.json b/src/.vscode/launch.json
@@ -0,0 +1,24 @@
+{
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "C/C++ Runner: Debug Session",
+      "type": "cppdbg",
+      "request": "launch",
+      "args": [],
+      "stopAtEntry": false,
+      "externalConsole": true,
+      "cwd": "//wsl.localhost/Ubuntu/home/mahmoudramadan/linux-6.18.10/lsh/src",
+      "program": "//wsl.localhost/Ubuntu/home/mahmoudramadan/linux-6.18.10/lsh/src/build/Debug/outDebug",
+      "MIMode": "gdb",
+      "miDebuggerPath": "gdb",
+      "setupCommands": [
+        {
+          "description": "Enable pretty-printing for gdb",
+          "text": "-enable-pretty-printing",
+          "ignoreFailures": true
+        }
+      ]
+    }
+  ]
+}
diff --git a/src/.vscode/settings.json b/src/.vscode/settings.json
@@ -0,0 +1,59 @@
+{
+  "C_Cpp_Runner.cCompilerPath": "gcc",
+  "C_Cpp_Runner.cppCompilerPath": "g++",
+  "C_Cpp_Runner.debuggerPath": "gdb",
+  "C_Cpp_Runner.cStandard": "",
+  "C_Cpp_Runner.cppStandard": "",
+  "C_Cpp_Runner.msvcBatchPath": "C:/Program Files/Microsoft Visual Studio/VR_NR/Community/VC/Auxiliary/Build/vcvarsall.bat",
+  "C_Cpp_Runner.useMsvc": false,
+  "C_Cpp_Runner.warnings": [
+    "-Wall",
+    "-Wextra",
+    "-Wpedantic",
+    "-Wshadow",
+    "-Wformat=2",
+    "-Wcast-align",
+    "-Wconversion",
+    "-Wsign-conversion",
+    "-Wnull-dereference"
+  ],
+  "C_Cpp_Runner.msvcWarnings": [
+    "/W4",
+    "/permissive-",
+    "/w14242",
+    "/w14287",
+    "/w14296",
+    "/w14311",
+    "/w14826",
+    "/w44062",
+    "/w44242",
+    "/w14905",
+    "/w14906",
+    "/w14263",
+    "/w44265",
+    "/w14928"
+  ],
+  "C_Cpp_Runner.enableWarnings": true,
+  "C_Cpp_Runner.warningsAsError": false,
+  "C_Cpp_Runner.compilerArgs": [],
+  "C_Cpp_Runner.linkerArgs": [],
+  "C_Cpp_Runner.includePaths": [],
+  "C_Cpp_Runner.includeSearch": [
+    "*",
+    "**/*"
+  ],
+  "C_Cpp_Runner.excludeSearch": [
+    "**/build",
+    "**/build/**",
+    "**/.*",
+    "**/.*/**",
+    "**/.vscode",
+    "**/.vscode/**"
+  ],
+  "C_Cpp_Runner.useAddressSanitizer": false,
+  "C_Cpp_Runner.useUndefinedSanitizer": false,
+  "C_Cpp_Runner.useLeakSanitizer": false,
+  "C_Cpp_Runner.showCompilationTime": false,
+  "C_Cpp_Runner.useLinkTimeOptimization": false,
+  "C_Cpp_Runner.msvcSecureNoWarnings": false
+}
diff --git a/src/main.c b/src/main.c
@@ -17,26 +17,43 @@
 #include <stdio.h>
 #include <string.h>
 
+#define HISTORY_SIZE 100
+
+char *history[HISTORY_SIZE];
+int history_count = 0;
+
 /*
   Function Declarations for builtin shell commands:
  */
 int lsh_cd(char **args);
 int lsh_help(char **args);
 int lsh_exit(char **args);
+int lsh_pwd(char **args);
+int lsh_echo(char **args);
+int lsh_history(char **args);
+int lsh_env(char **args);
 
 /*
   List of builtin commands, followed by their corresponding functions.
  */
 char *builtin_str[] = {
   "cd",
   "help",
-  "exit"
+  "exit",
+  "pwd",
+  "echo",
+  "history",
+  "env"
 };
 
 int (*builtin_func[]) (char **) = {
   &lsh_cd,
   &lsh_help,
-  &lsh_exit
+  &lsh_exit,
+  &lsh_pwd,
+  &lsh_echo,
+  &lsh_history,
+  &lsh_env
 };
 
 int lsh_num_builtins() {
@@ -244,6 +261,69 @@ char **lsh_split_line(char *line)
   return tokens;
 }
 
+
+
+int lsh_pwd(char **args)
+{
+    char cwd[1024];
+
+    if (getcwd(cwd, sizeof(cwd)) != NULL)
+    {
+        printf("%s\n", cwd);
+    }
+    else
+    {
+        perror("pwd");
+    }
+
+    return 1;
+}
+
+
+int lsh_echo(char **args)
+{
+    int i = 1;
+
+    while (args[i] != NULL)
+    {
+        printf("%s", args[i]);
+
+        if (args[i + 1] != NULL)
+            printf(" ");
+
+        i++;
+    }
+
+    printf("\n");
+
+    return 1;
+}
+
+int lsh_history(char **args)
+{
+    for (int i = 0; i < history_count; i++)
+    {
+        printf("%d %s\n", i + 1, history[i]);
+    }
+
+    return 1;
+}
+
+extern char **environ;
+
+int lsh_env(char **args)
+{
+    int i = 0;
+
+    while (environ[i] != NULL)
+    {
+        printf("%s\n", environ[i]);
+        i++;
+    }
+
+    return 1;
+}
+
 /**
    @brief Loop getting input and executing it.
  */
@@ -256,9 +336,14 @@ void lsh_loop(void)
   do {
     printf("> ");
     line = lsh_read_line();
+
+    history[history_count] = strdup(line);
+    history_count++;
+
     args = lsh_split_line(line);
     status = lsh_execute(args);
 
+
     free(line);
     free(args);
   } while (status);