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
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 :(
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.
You can use the command gdb -ex 'b fun1' -ex 'b fun2' (or in long form -eval-command).
Curiously, it is missing in man gdb, but it is there in info gdb. And in the sources, of course!
I Don't know if you can set breakpoints outside gdb, but I know you can use Linux commands inside gdb, so that you don't have to quit gdb frequently. The gdb command is shell yourcommand, if u wanna run ls, just type shell ls under gdb.
