Here's my routine to debug quick stuff on the cli:
$ gcc myprogram.c -g -o myprogram $ gdb -tui myprogram (gdb) break main (gdb) run You will have the program running and stopped at main. After this, here are the commands I use the most:
| Command | Short version | Description |
|---|---|---|
step | s | Step in |
next | n | Step over |
until 123 | unt 123 | Run until line 123 |
info locals | i lo | Prints local variables |
print myvar | p myvar | Prints myvar value once |
display myvar | disp myvar | Displays myvar value on every execution |
undisplay myvar | und myvar | Stops displaying myvar value |
set myvar = 0 | s myvar = 0 | Sets the value of myvar to 0 |
break 456 | b 456 | Adds a breakpoint on line 456 |
info breakpoints | i b | Lists all breakpoints |
delete | d | Delete all breakpoints |
list main | l main | Go to function main |
list foo.c:789 | l foo.c:789 | Go to file foo.c on line 789 |
where | whe | Prints where the execution is at right now |
kill | k | Kills the current execution |
Ctrl-l refreshes the screen if needed. focus cmd makes the arrow keys work on the command line, focus src makes it scroll the source code being displayed.
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