README.md

GIT Cheat Sheet

git add -p	only add some of the changes from a file
git reset --hard HEAD	Reset WD to Previous commit
git clean -f -n	Remove untracked files (dry-run)
git reset --hard HEAD~	Delete last Commit
git format-patch --stdout > changes.patch	Changes on seperate branch
git diff --full-index HEAD~ > changes.patch	Diff for review board
git push :dev/corichar/ptest-wrapper	delete remote branch
git archive --format=tar.gz --prefix=project/ HEAD > project.tar.gz	package a repo
git send-email -1 --to [email protected] --subject-prefix="meta-virtualization][PATCH"	git send email usage

Make and GNU Stow Cheat Sheet

./configure --prefix=/usr/local
make
sudo make install prefix=/usr/local/stow/foo-1.2.3
cd /usr/local/stow
stow foo-1.2.3
# if this does not work then the following might

./configure --prefix=/usr/local
make
sudo make DESTDIR=/usr/local/stow/foo-1.2.3 install
cd /usr/local/stow
# but you may have to fix the path in the installed directory before using stow
stow -t / foo-1.2.3

One liners

Command	Explanation
curl https://github.com/username.keys >> ~/.ssh/authorized_keys	Allow a certain user to access your machine
ssh-add ~/.ssh/id_rsa	Unlock your ssh-key for the session
useradd -m -d /home/${user} ${user}	Create a new user
cat list | xargs -I {} -n1 echo {}.bak	Xargs with argument list

C Cheat Sheet

printf("%.*s\n" str_len, str); // print non-NUL terminated string

Perf Flame Graph

git clone https://github.com/brendangregg/FlameGraph
perf record -F 99 -ag -- sleep 10
perf script | ./stackcollapse-perf.pl > out.perf-folded
./flamegraph.pl out.perf-folded > perf-kernel.svg

vboxmanage setproperty machinefolder ~/vms