Setting break via cmd line on running GDB

Question

Is there a way to set break point via cmd line on using GDB.

Currently on running GDB, I need to set

 (gdb) b fun1
 (gdb) b fun2
 (gdb) b fun3

and If I close and open the GDB again, I need to set all the break points :( . Is there a way to set break point for GDB in cmd line itself, like

  $> gdb -break fun1 -break fun2 -break fun3 ./myprog

Answer 1

GDB Provides -ex option to set GDB commands such as 'break' 'info' 'set print' 'display x' on invoking GDB from command line, as shown below

    $> gdb -ex 'break main' -ex 'info b' -ex 'set print pretty on' ./myprog

The option of -ex option is not specified in man page or in GDB help :(

Answer 2

Put your break commands in a file, and pass the file to gdb on the command line using the -x flag.

From man gdb:

   -x file
           Execute GDB commands from file file.

It turns out that there is a command for similarly passing commands, but on the command line: both -ex and -eval-command allow you to pass an individual command. It appears to have been introduced in version 7: it's unavailable on gdb 6.3.5, but available in 7.3.1. -ex and -eval-command are documented in the online gdb docs with the other command-line arguments here.

So, for your example:

$> gdb -ex 'break fun1' -ex 'break fun2' -ex 'break fun3' ./myprog

The other answers schooled me on this.