coreutils

commit b8a3686be2bf0ffa7c79315af97fd7a30d6be74b
parent 8ba2df1a8878f95ad5f92ad0f43b407a66456b93
Author: evenfri <evenfri256@gmail.com>
Date:   Sat,  8 Aug 2026 04:26:36 +0800

update cc

Diffstat:
M
mkfile
 | 
9
+++++----
M
sh/mkfile
 | 
5
++---
A
sh/sh.c
 | 
70
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

3 files changed, 77 insertions(+), 7 deletions(-)
diff --git a/mkfile b/mkfile
@@ -1,6 +1,7 @@
-<$LPLAN9/src/mkhdr
+<$PLAN9/src/mkhdr
+
+not_use_libc = 1
 
-cc = fcc
 ld = ld
 cflags = -I./libc
 lib = ./libc/libc.a
@@ -14,5 +15,5 @@ targ = init \
 
 dirs = sh \
 
-<$LPLAN9/src/mkmany
-<$LPLAN9/src/mkdirs
+<$PLAN9/src/mkmany
+<$PLAN9/src/mkdirs
diff --git a/sh/mkfile b/sh/mkfile
@@ -1,6 +1,5 @@
-<$LPLAN9/src/mkhdr
+<$PLAN9/src/mkhdr
 
-cc = fcc
 ld = ld
 cflags = -I../libc
 lib = ../libc/libc.a
@@ -9,4 +8,4 @@ ofiles =  main.$o \
 
 targ = sh
 
-<$LPLAN9/src/mkone
+<$PLAN9/src/mkone
diff --git a/sh/sh.c b/sh/sh.c
@@ -0,0 +1,70 @@
+#include <libc.h>
+
+#define msg_clear "\033[2J\033[H"
+
+#define max_line 256
+#define max_args 16
+#define max_cwd 256
+
+static char prompt[] = "; ";
+
+void execcd(const char *path) {
+  chdir(path);
+}
+
+int main(void) {
+  char line[max_line];
+  char *argv[max_args];
+
+  while (1) {
+    write(stdout, prompt, 2);
+
+    ssize_t n = read(stdin, line, max_line - 1);
+    if (n <= 0) continue;
+
+    line[n] = '\0';
+    if (line[n - 1] == '\n') line[n - 1] = '\0'; 
+
+    if (strlen(line) == 0) continue;
+
+    if (strcmp(line, "clear") == 0) {
+      write(stdout, msg_clear, strlen(msg_clear));
+      continue;
+    }
+
+    if (strcmp(line, "exit") == 0) {
+      break;
+    }
+
+    int argc = 0;
+    char *token = strtok(line, " ");
+    while (token != NULL && argc < max_args - 1) {
+      argv[argc++] = token;
+      token = strtok(NULL, " ");
+    }
+    argv[argc] = NULL;
+
+    if (argc == 0) continue;
+
+    if (strcmp(line, "cd") == 0) {
+      execcd(argv[1]);
+      continue;
+    }
+
+    int pid = fork();
+    if (pid == 0) {
+      /* child */
+      execvp(argv[0], argv);
+
+      write(stderr, "sh: command not found: ", 23);
+      write(stderr, argv[0], strlen(argv[0]));
+      write(stderr, "\n", 1);
+      exit(127);
+    } else if (pid > 0) {
+      /* parent */
+      int status;
+      waitpid(pid, &status, 0);
+    }
+  }
+  return 0;
+}