how to take backup of a file without stopping the running process

[raju8438]

Hi

I need to take the backup of a debug file with out stopping that process. Could you please me how to make it in unix.

Thanks in advance

[koothkeeper]

You should be able to copy it:

cp debug.log debug.save

[Konstantin2]

Find PID of your process:

$ ps -C a.out
1234 ? 00:00:00 a.out

Attach gdb to this process:

$ gdb
(gdb) attach 1234

And make core file

(gdb) generate-core-file

Later you can reload it by

$ gdb ./a.out core.1234