1 files changed, 0 insertions, 72 deletions
diff --git a/src/user/grep.cc b/src/user/grep.cc
deleted file mode 100644
index 1e1c42d..0000000
--- a/src/user/grep.cc
+++ /dev/null
@@ -1,72 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright (C) 2026 Richard QIn
- */
-#include "ulib/stdio.h"
-#include "ulib/stdlib.h"
-#include "ulib/string.h"
-#include "user/user.h"
-#include "common/fcntl.h"
-
-char buf[1024];
-
-void grep(char *pattern, int fd)
-{
-    int n, m;
-    char *p, *q;
-
-    m = 0;
-    while ((n = read(fd, buf + m, sizeof(buf) - m - 1)) > 0)
-    {
-        m += n;
-        buf[m] = '\0';
-        p = buf;
-        while ((q = strchr(p, '\n')) != 0)
-        {
-            *q = 0;
-            if (strstr(p, pattern) != 0)
-            {
-                printf("%s\n", p);
-            }
-            p = q + 1;
-        }
-        if (p == buf)
-            m = 0;
-        if (m > 0)
-        {
-            m -= p - buf;
-            memmove(buf, p, m);
-        }
-    }
-}
-
-int main(int argc, char *argv[])
-{
-    int fd, i;
-    char *pattern;
-
-    if (argc < 2)
-    {
-        printf("Usage: grep pattern [file...]\n");
-        exit(1);
-    }
-    pattern = argv[1];
-
-    if (argc == 2)
-    {
-        grep(pattern, 0); // stdin
-        exit(0);
-    }
-
-    for (i = 2; i < argc; i++)
-    {
-        if ((fd = open(argv[i], O_RDONLY)) < 0)
-        {
-            printf("grep: cannot open %s\n", argv[i]);
-            exit(1);
-        }
-        grep(pattern, fd);
-        close(fd);
-    }
-    exit(0);
-}
-\ No newline at end of file