# Ops
# Network
# disable ipv6
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
> sysctl -w net.ipv4.ip_forward=1
> sysctl --system
> $ sysctl -a | grep kernel
# mariadb
sudo launchctl stop com.mariadb.server
sudo launchctl start com.mariadb.server
disk usage
du -csh *
du -csh .??*
du -csh {.??*,*}
find file
find . -iname "*.c"
restart audio macos
killall coreaudiod
simple server
python -m SimpleHTTPServer 8080
kill and recover
killall -STOP Slack
killall -CONT Slack
delete all branch except current
git branch | grep -v "^\\*" | xargs git branch -D