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记录gdb调试某一应用并执行不同命令

gdb调试某应用，可以直接使用sudo gdb /usr/local/bin/git，可以使用run方法执行特殊指令，比如run checkout -f HEAD。

详情执行如下：

sudo gdb /usr/local/bin/git
GNU gdb (GDB) Red Hat Enterprise Linux (7.2-92.el6)
Copyright (C) 2010 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 "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/local/bin/git...(no debugging symbols found)...done.
(gdb) run checkout -f HEAD
Starting program: /usr/local/bin/git checkout -f HEAD
[Thread debugging using libthread_db enabled]
fatal: BUG: your vsnprintf is broken (returned -1)

Program exited with code 0200.
Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.209.el6_9.1.x86_64 zlib-1.2.3-29.el6.x86_64
(gdb) bt

解决Mac下check gdb is codesigned – see taskgated(8)问题

刚刚安装的GDB调试的时候会报

Starting program: /Users/wangxinguo/C/DataStruct/3/a.out
Unable to find Mach task port for process-id 5222: (os/kern) failure (0x5).
 (please check gdb is codesigned - see taskgated(8))

这是因为没有特殊授权的情况下不允许gdb调试任何程序，所以可以按照如下过程解决
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