How to make gdb not ask me "y or n"?

Question

When I use GDB command add-symbol-file to load the symbol, GDB always asks me 'y or n', like this:

gdb> add-symbol-file mydrv.ko 0xa0070000
add symbol table from file "mydrv.ko" at
        .text_addr = 0xa0070000
(y or n)

How to make it not ask and execute quietly?

Solution

gdb will ask you to confirm certain commands, if the value of the confirm setting is on. From Optional Warnings and Messages:

• set confirm off
  Disables confirmation requests. Note that running GDB with the --batch option (see -batch) also automatically disables confirmation requests.
• set confirm on
  Enables confirmation requests (the default).
• show confirm
  Displays state of confirmation requests.

That's a single global setting for confirm. In case you want to disable confirmation just for the add-symbol-file command, you can define two hooks, which will run before and after the command:

(gdb) define hook-add-symbol-file
set confirm off
end
(gdb) define hookpost-add-symbol-file
set confirm on
end

If you want to disable confirmation just for a single invocation of a command, precede it with the server keyword, which is part of gdb's annotation system.

Comments

[Admin]

Try set confirm off.

[Admin]

@MarkPlotnick, Thanks very much. It works!