Category: Linux

rsync – Remote synchronization Remote/Local file synchronization tool Uses the algorithm that minimizes the amount of data copied by moving portions of files that have changed, rather than all files.…Continue readingUnderstanding rsync

This information is pulled from archive.nanong.org. The traceroute utility is used to know which path our packets are taking to get to the destination. It uses TTL (time to live)…Continue readingUnderstanding traceroute

Show IPv4 and IPv6 interfaces Show interface ens4 details Show only running interfaces Add the IP address to the interface Add IP address to the interface Add broadcast address to…Continue readingUnderstanding ip command

Viewing processes The ps (process status) is used to view information about running processes on a system. The ps utility reads these results from /proc filesystem. To look at currently…Continue readingps

Normally, we would have a disk drive and create a partition on it. On top of a partition, we would install filesystem. However, with LVM we also have disk drive…Continue readingUnderstanding Logical Volume Manager (LVM)

All information pulled out from this link for personal notes and study. How iptables work The iptables work mainly in Internet layer and Transport layer. However, iptables can also work…Continue readingiptables

The systemd is backward compatible with SysV init. If the system has /etc/inittab file, it uses SysV init. The SystemV init (SysV init) is using runlevels to define the state…Continue readingUnderstanding SysV

The widely used beast among initialization processes is systemd. The systemd will take full control of the system, right after the kernel is loaded. After that, systemd will pull the…Continue readingUnderstanding systemd

Init process is the mother (parent) of all processes on the system. It is the first program that is executed when Linux boots up. Init processes manages all other processes…Continue readingUnderstanding init