Related to the earlier article on kernel
development, here’s one thing that
I find very useful. During development I often compile, load, unload, modify,
and recompile in a loop. I rarely do this on my development machine but rather
in a VM or on a nearby test machine. It’s a pain to keep typing
dmesg all the
time. So I keep a separate terminal open with
dmesg running in a loop.
Actually it’s a split pain within Tmux, but that’s not important yet. Here’s
what I do.
while true; do sudo dmesg -c | tee -a /tmp/dmesg.log; sleep 1; done
With this running in it’s own terminal, you can now immediately see the effect
of a module load or unload without having to go through the tedium of typing
dmesg and figuring out what’s been added since the last invocation. I find
this quite helpful.
tee is a really useful tool, read up on it if you haven’t already.