Good morning, I started a gdb debug session several hours ago. Is possible to use gdb to attach to a process already being debugged by gdb?
I tried to attach as root but I get the following error message:
[root@localhost lirh5g_deb]# gdb ./MatchUpAccurate.exe 12327 ptrace: Operation not permitted. /home/frank/DQT/MatchUpTest/lirh5g_deb/12327: No such file or directory.
We are using Centos Linux Version 5.5. Thank you.
Unfortunately, not directly. Your only option, if you didn't use screen/tmux, is to search for a tty hijacker (it's possible to "steal" tty's - this is an ugly solution though) and grab the tty which has your existing gdb session