๐ Today I Learned: A collection of code snippets and other tricks I've learned. (Inspired by thoughtbot/til, jbranchaud/til and others.)
- Check connectivity to a host
- Common Linux package names
- Dump packets with
tcpdump
- Fingerprint SSH keys
ifconfig
andnetstat
are deprecated- Keep two folders in sync across hosts
- Notify users logged in to a machine
- Show open ports
- Write to STDIN of a background process
- Set up a local test domain with
dnsmasq
- Set up password-less
sudo
- See the
ENV
of a running process