Dron's thoughts attic

https://www.linode.com/docs/tools-reference/linux-system-administration-basics/

https://www.inmotionhosting.com/support/website/server-usage/using-the-linux-top-command-in-batch-mode

https://serverfault.com/questions/190049/find-out-which-task-is-generating-a-lot-of-context-switches-on-linux

https://serverfault.com/questions/898064/centos-7-ldap-authentication-su-works-but-ssh-console-login-not-works

http://alvarom.com/2014/08/25/profiling-applications-on-linux/

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/performance_tuning_guide/s-cpu-irq

https://www.linkedin.com/pulse/server-performance-tuning-interrupt-process-affinity-cpu-kumar

https://stackoverflow.com/questions/17565829/bash-kill-not-work

https://www.linuxcnf.com/2018/11/how-to-change-default-mta-in-cent-os-7.html

Networking

- net commands replacement

- Turbo-boost, cpufreq, tuned etc

Selinux

yum

journald