问题描述
我有一个非常复杂的shell脚本，其中它调用一个C + +程序我想通过GDB调试。从shell中分离这个c ++程序是非常困难的，因为它有很多的变量和很多环境变量设置。
I have a extremely complicated shell script, within which it calls a C++ program I want to debug via GDB. It is extremely hard to seperate this c++ program from the shell since it has a lot of franches and a lot of environmental variables setting.
我不知道有没有办法在这个shell脚本上调用GDB？看起来像gdb要求我直接调用一个C ++程序。
I wonder is there a way to invoke GDB on this shell script? Looks like gdb requires me to call on a C++ program directly.
谢谢！
推荐答案
您可以执行以下两个选项：
There are two options that you can do:
1 ）直接在shell脚本中调用GDB。这意味着你没有标准的和标准的重定向。
1) invoke GDB directly within the shell script. This would imply that you don't have standard in and standard out redirected.
2）运行shell脚本，然后将调试器附加到已经运行的c ++进程，像这样：gdb progname 1234其中1234是正在运行的c ++进程的进程ID。
2) run the shell script and then attach the debugger to the already running c++ process like so: gdb progname 1234 where 1234 is the process ID of the running c++ process.
如果您需要在程序开始运行之前执行操作，则选项1将是更好的选择，否则选项2是更清洁的方式。
If you need to do things before the program starts running then option 1 would be the better choice, otherwise option 2 is the cleaner way.
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