Linux and Unix, Open Source, Linux Howtos
Installing a package in Linux from command line is a simple task. By using single command or combination of multiple commands you can complete your task easily. The same can …
How to manually install security updates on Debian/Ubuntu? Read More
There are many open source monitoring tools are currently available in market to monitor Linux systems performance which will send an email alert when the system reaches the specified threshold …
Bash script to monitor memory usage on Linux Read More
If a password policy is pre-implemented in your organization, then there is no need to verify this, as locked accounts will auto-unlock according to the configuration. However, manual unlock is …
Four ways to lock & unlock a user account in Linux Read More
Most of us will free up the disk space whenever we face out of disk space on Linux system. It should be performed frequently, to make space for installing any …
5 Easy ways to free up space (Remove unwanted or junk files) on Ubuntu Read More
NTP stand for Network Time Protocol, which synchronizes the clock between computer systems over the network. NTP server keep all the servers in-sync with accurate time to perform time based …
How to verify if NTP sync is working on Linux? Read More
CPU performance is one aspect of measuring the performance of a system, which is essential to measure the overall system-performance. When a Linux system CPU is occupied by multiple processes, …
Linux Shell script to monitor CPU utilization with an email alert Read More
We had wrote two articles in the past about this topic and each articles were published for different requirements. If you would like to check those articles before getting into …
Two methods to check or list out installed security updates on Redhat (RHEL) & CentOS system Read More
Patching of the Linux server is one of the important and routine task of Linux admin. Keeping the system with latest patch level is must. It protects your system against …
Four ways to install security updates on Red Hat (RHEL) & CentOS systems Read More
Based on your organization policy you may need to push only security updates due to various reasons. In most cases, it could be an application compatibility issues. Is it possible …
How to check available security updates on Red Hat (RHEL) and CentOS system Read More
Based on your organization standard policy, you may need to allow only the list of users or user groups who are allowed to access the Linux system. How to achieve …
How to Enable/Disable SSH access for a particular user or user group in Linux Read More