My goal is to keep breakpoints between debugging sessions in CDB (the command line version of windbg). I am able to correctly restart by using .restart, however I always lose my breakpoints (I am setting my breakpoints by using the bu and/or bm commands.
Is it even possible when using just cdb?
cdb is not possible use .bpcmds before .restart and save to someplace and reuse it after restart
for windbg you can use workspaces to save breakpoints between sessions
edit a demo
suppose you have these breakpoints
0:000> bl
0 e 00007ff6`0fc4109c 0001 (0001) 0:**** calc!wWinMain
1 e 00007ff6`0fc41820 0001 (0001) 0:**** calc!wWinMainCRTStartup
2 e 00007ff6`0fc41960 0001 (0001) 0:**** calc!matherr
3 e 00007ffb`f033d880 0001 (0001) 0:**** ntdll!NtCreateTimer2
4 e 00007ffb`f033d6a0 0001 (0001) 0:**** ntdll!NtCreateNamedPipeFile
5 e 00007ffb`f02a2000 0001 (0001) 0:**** ntdll!RtlDefaultNpAcl+0x190
6 e 00007ffb`ede53000 0001 (0001) 0:**** KERNELBASE!EnumDynamicTimeZoneInformation+0x60
.bpcmds will show you how set them (the last two are symbol less bps based on rva )
and if you had set them using bp they may not work the next time
due to ASLR as the module may be loaded at a different Address
0:000> .bpcmds
bu0 calc!wWinMain;
bu1 calc!wWinMainCRTStartup;
bu2 calc!wsetargv;
bu3 ntdll!ZwCreateTimer2;
bu4 ntdll!ZwCreateNamedPipeFile;
bu5 ntdll+2000;
bu6 kernelbase+3000;
0:000>
copy paste to some scratch space and after .restart copy paste back to cdb console
you can use .logopen {some_path_to_some_textfile} do .bpcmds and .restart also
in this case you can copy paste the bps from logfile and don't have to open the log file again as windbg/cdb doesn't close the logfile on .restart
here is .restart also capturted to logfile
bu6 kernelbase+3000;
0:000> .restart
CommandLine: calc