Linux Automation

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Setup a proxy server for apt

echo 'Acquire::http::Proxy "http://myserver.com.com:port";' > /etc/apt/apt.conf

Update using apt

  • Possible commands
apt-get -y  upgrade -s
apt-get -y  upgrade -s; logger "APT has been applied"
unattended-upgrade --dry-run -d

Automatic update using crontab

~# echo 'MAILTO=""' > mycron
~# echo "00 05 * * * apt-get update && apt-get -y upgrade -s | logger 
~# sudo crontab mycron
~# rm mycron

Users and Groups

Configure sudo to gain root privileges for users

  • /etc/sudoers (use visudo -f)
root    ALL=(ALL:ALL) ALL
  • Add user joe to sudo
usermod -a -G sudo joe
  • Add a system user (no shell)
useradd -M systemuser
  • Prevent login
usermod -L systemuser