How to use GDB ?

indian · 09-05-2004, 12:40 AM

Ok so I am one of those Unlucky souls in this world who knows that there is something like GDB exist but I don't know how to use it.Can anyone please tell me how to use it and what are the advantages of using it ? With Regards...

itsme86 · 09-05-2004, 01:57 AM

It's for debugging runtime problems with programs. The advantages are...it helps you figure out where the problem is in your code. Telling you "how to use it" would take pages of text. It might be best to just dive in and play with it or to search online for one of the many tutorials.

phoenix7 · 09-05-2004, 09:20 AM

Hi

gdb is powerfull linux debugger. one of its advantages is that works in text mode.
for debugging your program you can start

Code:

gdb yourprogramname

then in gdb you type

Code:

then gdb executes your program
if your program doesn't exit succesfully, running your program is breaked and you can type

Code:

bt

to see call stack
and

Code:

print variablename

to see variables' name.

you can add breakpoints and etc in running your program.
for furhter assistant you can type

Code:

help

in gdb command line or
see it's manual page

Code:

man gdb

Have a time with linux,
Mohammad

cppkid · 09-06-2004, 12:52 AM

Look if you are new to GDB i recommend you to use DDD or because it have the GUI interface for GDB and also provides the console if you want to use it as normal, So that you can explore it yourself as there is button for each operation of GDB. Like if you have to use "step" command there is a button for that and also when you press the buitton otr put some breakpoint you will see that DDD will write the command in the console so you can see how to use GDB.

phoenix7 · 09-06-2004, 05:11 AM

Hi
gdb has an advantage that is founded in almost all linux distribution.
and you work with it when you telnet or ssh or you use remote console login.

Have a good times with Linux,
Mohammad