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Linux iotop: Check What’s Stressing And Increasing Load On Your Hard Disks
The iotop command is top like utility for disk I/O. It watches I/O usage information output by the Linux kernel (requires v2.6.20 or later) and displays a table of current I/O usage by processes or...
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Solaris / Linux: nicstat Command Show Network Interface Card Statistics
The nicstat command is top like utility for network interface card (NIC). It displays information and statistics about all your network card such as packets, kilobytes per second, average packet sizes...
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Linux and Unix nload App: Monitor Network Traffic and Bandwidth Usage In Real...
If you want to monitor network throughput on the command line interface, use nload application. It is a console application which monitors network traffic and bandwidth usage in real time. It...
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Linux Tutorial: Install Ansible Configuration Management And IT Automation Tool
Today I will be talking about ansible, a powerful configuration management solution written in python. There are many configuration management solutions available, all with pros and cons, ansible...
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Secure Your Linux Desktop and SSH Login Using Two Factor Google Authenticator
Two factor authentication is increasingly becoming a strongly recommended way of protecting user accounts in web applications from attackers by requiring a second method of authentication in addition...
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Book Review: PAM Mastery
Linux, FreeBSD, and Unix-like systems are multi-user and need some way of authenticating individual users. Back in the old days, this was done in different ways. You need to change each Unix...
View ArticleHow to speed up OpenSSL/GnuPG Entropy For Random Number Generation On Linux
Entropy is nothing but the measure of "randomness" in a sequence of bits. The PRNG ( pseudorandom number generator ) is a special device (e.g. /dev/random on Linux) to create randomness from server...
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Talos Secure POWER8 Linux Workstation With Fully Open Source Firmware
Raptor Engineering is working and crowdfunding a high-end power8 based desktop computer with zero proprietary firmware blobs in the Talos Secure Workstation. Traditionally IBM, Oracle(Sun), Intel/AMD...
View Article3 Awesome Complete Open Source Mail Servers Solutions For Linux and UNIX servers
In the world of mail servers, there are many software and technologies. Here is a list of 3 of them that you must know.
View ArticleIs my Linux server or desktop affected by WannaCrypt ransomware?
From my mailbag: Dear nixCraft, I run a Debian Linux 8.x on my Desktop and Ubuntu Linux 16.04 LTS on my Linode cloud server for my personal website. I am concerned that my Linux is affected by the...
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Linux security alert: Bug in sudo’s get_process_ttyname() [ CVE-2017-1000367 ]
There is a serious vulnerability in sudo command that grants root access to anyone with a shell account. It works on SELinux enabled systems such as CentOS/RHEL and others too. A local user with...
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I put a cronjob in /etc/cron.{hourly,daily,weekly,monthly} and it does not...
Recently I created a simple shell script called backup.sh in /root/scripts directory to just backup MySQL database and dumped it to /nfs/mysql/ directory. I put a file (more like used the ln command...
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How to record statistics about a Linux machine’s uptime
Linux/Unix sysadmins have a weird obsession with server uptime. There is a xkcd comic devoted to this subject where a good sysadmin is an unstoppable force that it stands between the forces of darkness...
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gtop: Awesome system monitoring dashboard for Linux/macOS Unix terminal
> I like htop interactive process viewer. Recently I found another one called gtop. It is similar to top, but fancier. Let us see how to install and use gtop on a Linux or macOS Unix based system....
View Article400K+ Exim MTA affected by overflow vulnerability on Linux/Unix
Exim is a free and open source message transfer agent (MTA) developed at the University of Cambridge. It is famous on Unix and Linux systems connected to the Internet. It is freely available under the...
View ArticleRaspberry PI 3 model B+ Released: Complete specs and pricing
A new version of the Raspberry PI 3 model B+ has released, and it is incredible update over the older model. Just over two years ago, I got Raspberry Pi 3 Model B. It was my first 64-bit ARM board. It...
View ArticleKDE has been deprecated in RHEL 7.6 and future version of RHEL
Red Hat Enterprise Linux is well known to set defaults across the industry. For example, RHEL pushed systemd so hard that all other Linux distro adopted for good or bad reasons. Now Red Hat announced...
View ArticleRaspberry $25 Pi 3 Model A+ Released – Complete specs and pricing
The Raspberry Pi is a small single-board computer (SBC) developed by the Raspberry Pi Foundation. It supposes to promote the teaching of computer science, programming for kids and in developing...
View ArticleLinux kernel 5.0 released and here is how to install it
Linus Torvalds the creator and the principal developer of the Linux kernel announced the release of Linux kernel version 5.0. This release increases the major kernel version number to 5. from 4.x. The...
View ArticleCentOS Linux 7.7 released and here is how to update it
The CentOS Linux project has released an updated version of its stable Linux distribution CentOS Linux 7.7. You must upgrade to get corrections for security problem as this version made a few...
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