ver 1

Signed-off-by: czjstmax <jstmaxlol@disroot.org>

4 files changed, 143 insertions, 0 deletions

diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..2de8f20
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 czjstmax <jstmaxlol at disroot dot org>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..41d90f7
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,14 @@
+CC      = gcc
+IN      = nosh.c
+OUT     = nsh
+LIBS 	= 
+OPTS 	= -O0 -g -Wall -Wextra -pedantic
+
+all:
+	$(CC) -o$(OUT) $(LIBS) $(OPTS) $(IN)
+
+run: all
+	./$(OUT)
+
+clean:
+	rm $(OUT)
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..2c6edec
--- /dev/null
+++ b/README.md
@@ -0,0 +1,8 @@
+# nosh - noshell
+a mini POSIX C shell for \*NIX dudes.
+
+### help screen
+```c
+// todo
+```
+
diff --git a/nosh.c b/nosh.c
new file mode 100644
index 0000000..14065c7
--- /dev/null
+++ b/nosh.c
@@ -0,0 +1,100 @@
+/*
+ * nosh - noshell
+ * a 2-hour C shell for POSIX mates
+ *
+ * czjstmax <jstmaxlol at disroot dot org>
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <wordexp.h>
+#include <sys/wait.h>
+
+//
+void handlecc(int sig);
+void freeStuff();
+
+//
+char *line = NULL;
+size_t len = 0;
+wordexp_t p;
+
+int main(void)
+{
+    signal(SIGINT, handlecc);
+
+    while (true) {
+        printf("$ ");
+        getline(&line, &len, stdin);
+
+        line[strcspn(line, "\n")] = '\0';
+
+        wordexp(line, &p, 0);
+
+        // debug
+//         for (size_t i = 0; i < p.we_wordc; i++) {
+//             printf("argv[%zu] = %s\n", i, p.we_wordv[i]);
+//         }
+
+        if (strlen(line) == 0)
+            continue;               //otherwise.. SIGSEGV!
+        if (strcmp(p.we_wordv[0], ":q") == 0 || strcmp(p.we_wordv[0], "exit") == 0) {
+            freeStuff();
+            return 0;
+        }
+        else if (strcmp(p.we_wordv[0], "echo") == 0) {
+            for (size_t i = 1; i < p.we_wordc; i++)
+                printf("%s ", p.we_wordv[i]);
+            if (p.we_wordc >= 2) {
+                if (strcmp(p.we_wordv[1], "-c") == 0)
+                    continue;
+                printf("\n");
+            }
+        }
+        else if (strcmp(p.we_wordv[0], "cd") == 0) {
+            if (chdir(p.we_wordv[1]))
+                perror("nsh! ERROR: failed to change directory");
+        }
+        else if (strcmp(p.we_wordv[0], "clear") == 0) {
+            printf("\033[2J\033[H\033[3J");
+            fflush(stdout);
+        }
+        else {
+            pid_t pid = fork();
+            char **argv = p.we_wordv; // pray with me now
+            if (pid == 0) {
+                char path[strlen("/usr/bin/") + strlen(p.we_wordv[0]) + 1];
+                sprintf(path, "/usr/bin/%s", p.we_wordv[0]);
+                execv(path, argv);
+                perror("nsh! ERROR: failed to execv()");
+                _exit(1);
+            }
+            else if (pid > 0) {
+                int status;
+                waitpid(pid, &status, 0);
+            }
+            else {
+                printf("nsh! couldn't open %s", p.we_wordv[0]);
+            }
+        }
+    }
+}
+
+void handlecc(int sig)
+{
+    printf("\nnsh! %d caught.\nfreeing stuff before quitting.\n", sig);
+    freeStuff();
+    exit(0);
+}
+
+void freeStuff()
+{
+    wordfree(&p);
+    free(line);
+}
+