Debugging a Process ...

Debugging a Process ...

[Ivan Deras]

I want to know how to debug a process in Linux, i know that in Windows i 
can use Windows-API to attach a debugger process to the debugged 
process, but in Linux i don't know ...

Re: Debugging a Process ...

[Damir Cosic]

* find out PID of the process (man pidof)

* call gdb with name of the program you want to debug as an argument

* in gdb type `attach PID'


On Oct 10/24/02 15:46, Ivan Deras wrote:
> I want to know how to debug a process in Linux, i know that in Windows i 
> can use Windows-API to attach a debugger process to the debugged 
> process, but in Linux i don't know ...

Re: Debugging a Process ...

[Steven Smith]

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> I want to know how to debug a process in Linux, i know that in Windows i 
> can use Windows-API to attach a debugger process to the debugged 
> process, but in Linux i don't know ...
If you want to attach an existing debugger, look at the documentation
for that debugger (in gdb, it's ``gdb <program_name> <pid of program>'').
If you're thinking of writing your own, have a look at man ptrace.
This isn't the clearest of documents, so you may want to have a look
at the source to a few programs which use it, like gdb, strace, or
ltrace, before starting on your own.

Steven Smith,
sos22@cam.ac.uk.

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Re: Debugging a Process ...

[Ivan Deras]

This is very helpful for me ... Thanks ...

Steven Smith wrote:

>>I want to know how to debug a process in Linux, i know that in Windows i 
>>can use Windows-API to attach a debugger process to the debugged 
>>process, but in Linux i don't know ...
>>    
>>
>If you want to attach an existing debugger, look at the documentation
>for that debugger (in gdb, it's ``gdb <program_name> <pid of program>'').
>If you're thinking of writing your own, have a look at man ptrace.
>This isn't the clearest of documents, so you may want to have a look
>at the source to a few programs which use it, like gdb, strace, or
>ltrace, before starting on your own.
>
>Steven Smith,
>sos22@cam.ac.uk.
>  
>

Re: Debugging a Process ...

[Nat Ersoz]

> * in gdb type `attach PID'

You might find the "ddd" will provide a nice graphical interface to
gdb.  I've used it frequently, and am very pleased with it.  All gdb
commands should work within it.


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