How to Debug C Program using gdb in 6 Simple Steps

Finally getting to know how to debug in terminal =) Check out this post.


How to Debug C Program using gdb in 6 Simple Steps

gdb command shortcuts

Use following shortcuts for most of the frequent gdb operations.

• l – list
• p – print
• c – continue
• s – step
• ENTER: pressing enter key would execute the previously executed command again.
• c or continue: Debugger will continue executing until the next break point.
• n or next: Debugger will execute the next line as single instruction.
• s or step: Same as next, but does not treats function as a single instruction, instead goes into the function and executes it line by line.
• l command: Use gdb command l or list to print the source code in the debug mode. Use l line-number to view a specific line number (or) l function to view a specific function.
• bt: backtrack – Print backtrace of all stack frames, or innermost COUNT frames.
• help – View help for a particular gdb topic — help TOPICNAME.
• quit – Exit from the gdb debugger.