如何使用gdb与输入重定向？

Question

在终端,我有

    myapp < myfileinput

但如果我想使用gdb,

    gdb myapp < myfileinput

它运行不正常.

如何在这里使用gdb？

Answer 1

~$ gdb <executable>

GNU gdb (Ubuntu/Linaro 7.3-0ubuntu2) 7.3-2011.08
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.launchpad.net/gdb-linaro/>...
Reading symbols from /home/abhishek/maxtest...done.

(gdb) run < input.txt

这对我来说很有用.想知道这是不是你想要的.

Answer 2

尝试从gdb中运行您的应用程序？

(gdb) file /usr/bin/head
Reading symbols from /usr/bin/head...(no debugging symbols found)...done.
(gdb) run -2 < /etc/passwd
Starting program: /usr/bin/head -2 < /etc/passwd
root:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/bin/sh

Program exited normally.
(gdb)

编辑:或者:

gdb -q -ex 'set args -2 < /etc/passwd' /usr/bin/head
Reading symbols from /usr/bin/head...done.

(gdb) run
root:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/bin/sh

Program exited normally.
(gdb) quit