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main.py

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+import os
+import re
+import signal
+import readline  # 用于支持历史记录
+
+# 标志位，用于处理信号
+interrupted = False
+
+def signal_handler(signal, frame):
+    global interrupted
+    interrupted = True  # 设置标志位
+
+signal.signal(signal.SIGINT, signal_handler)
+
+os.system('clear')
+
+def shell():
+    dir = os.getcwd()
+    if dir == '/':
+        CmdDir = '/'
+    elif re.match(dir, "/home/*"):  # 用户目录下的任意文件夹
+        CmdDir = '~'
+    else:
+        CmdDir = dir.split('/')[-1]
+    print(f'20250910553@何相龙 {CmdDir} % ', end='')
+    cmd = input().strip()  # 去除输入中的多余空白字符，包括换行符
+    if cmd:  # 如果输入不为空，保存到历史记录
+        readline.add_history(cmd)
+        os.system(cmd)
+
+while True:
+    if interrupted:
+        print("\nSignal received. Type 'exit' to quit.")
+        interrupted = False  # 重置标志位
+    shell()