How to automatically run two gdb commands upon startup

Question

I find that whenever I start gdb I almost always type in:

>>> b *main
>>> r

And then the program 'starts'. Is there a way I can automatically invoke this, either in a settings, or in the gdb invocation itself, such as something like:

$ gdb file.o -cmd "b *main; r"

Instead of b main followed by r, you could also just use start. — ssbssa
– ssbssa, Commented Oct 4, 2020 at 0:56

yugr · Accepted Answer · 2020-08-22 05:40:35Z

4

You can specify startup commands via command line:

gdb -ex 'b main' -ex r --args ls -l

edited Aug 22, 2020 at 5:40

answered Aug 22, 2020 at 5:34

yugr

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4 Comments

David542 Over a year ago

thanks that works great: gdb file.o --ex 'b main' --ex 'r'. Is it possible to combine multiple commands on a line in gdb or do you have to separate all commands on their own line?

yugr Over a year ago

@David542 No, AFAIK it is not possible to combine commands in single line.

David542 Over a year ago

ok thanks, and then finally, what does the --args ls -l do? I assume that would pass arguments to gdb ? (or are the args passed to the script itself?)

yugr Over a year ago

@David542 --args tells gdb that it needs to invoke the program which comes after --args with given arguments (ls -l in my example). It's not really related to your question so can be removed.

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