Myron's Dev Notes

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Ubuntu Notes

apt notes

apt-get install --no-install-recommends --no-install-suggests -y a b c

Add swap

fallocate -l 4G /swapfile
chmod 600 /swapfile
mkswap /swapfile
swapon /swapfile

EDITOR=vi vi /etc/fstab
/swapfile   none    swap    sw    0   0

Time Setup NTP

echo "America/Denver" > /etc/timezone
dpkg-reconfigure --frontend noninteractive tzdata

https://aws.amazon.com/premiumsupport/knowledge-center/system-clock-drift-ubuntu/
server 0.amazon.pool.ntp.org
server 1.amazon.pool.ntp.org
server 2.amazon.pool.ntp.org
server 3.amazon.pool.ntp.org
timedatectl

ntpq -p

service ntp restart

lsb_release -a
rm -rf /var/lib/apt/lists/* # apt cleanup
apt list --upgradable

lsof -ni:80 # process listening on port 80

netstat

# ss - new (ubuntu only?)
ss -nlt # tcp listening

top package

apt install procps-ng