Category: Linux

I need to reboot the VM or bare metal Linux machine/server using Ansible and wait for it to come back, but it does not work with playbook as descried here. How to reboot Linux server with Ansible? How do I reboot and wait for reboot to complete in Ansible playbook for multiple Linux servers?Introduction: You…

I am a new Debian / Ubuntu Linux sysadmin. I would like to find out what version I would install if I ran the apt-get command. How do I find out which versions of a package can I install using apt-cache/apt-get command? How do you check package version using apt-get/aptitude on Debian or Ubuntu Linux…

I want to remove all files from a directory. Can you tell me Linux command to delete all files in a directory?Introduction: You can remove all files in a directory using unlink command. Another option is to use the rm command to delete all files in a directory. This page explains how to delete all…

I am a new CentOS Linux 7.0 server user. How do I set up an OpenVPN Server on CentOS Linux version 7.0 server to shield my browsing activity from bad guys on public Wi-Fi, and more?Introduction OpenVPN is a full-featured SSL VPN (virtual private network). It implements OSI layer 2 or 3 secure network extension…

I am a new Ubuntu Linux 18.04 LTS server user. How do I set up an OpenVPN Server on Ubuntu Linux version 18.04 LTS server to shield my browsing activity from bad guys on public Wi-Fi, and more?Introduction OpenVPN is a full-featured SSL VPN (virtual private network). It implements OSI layer 2 or 3 secure…

How do I add a user to group under FreeBSD operating system? How can I add a user named top to existing group on a FreeBSD? How do I add a user to a group in FreeBSD?You need to use the pw command. The pw command line utility used for the system user and group…

How do I install install PHP 7.2 with FPM for Nginx web server running on FreeBSD operating system?Introduction: PHP is an acronym for “PHP: Hypertext Preprocessor.” It is an open source general-purpose scripting language. PHP is handy for web development and to run popular software such as MediaWiki, WordPress, and more. PHP is easy to…

I have minimal Ubuntu Linux 18.04 LTS server setup in the cloud. I read that one can configure Ubuntu Linux to download and install security updates when released automatically. How can I set up automatic security updates on Ubuntu Linux 18.04 or 16.04 LTS system?Introduction: It is true that the Linux server security is an…

I would like to see detailed information on the history of yum transactions such as updates, deleted packages, and other information. How do I see history of yum commands on a CentOS Linux/ RHEL 6.x or 7.x based server? How do I undo or redo or rollback packages using yum command?The yum command has history…

This is quick guide howto delete/remove/clean old kernels on Fedora, CentOS, Red Hat (RHEL). I use here two kernel as example, if you want to keep other more or less, then adjust amount of installed kernels as you wish. Normally reason why you maybe want remove kernels is limited disk space, example on VPS servers…

Tar (Tape Archive) is a popular file archiving format in Linux. It can be used together with gzip (tar.gz) or bzip2 (tar.bz2) for compression. It is the most widely used command line utility to create compressed archive files (packages, source code, databases and so much more) that can be transferred easily from machine to another…

The piece of text I’ve used as this article’s title should be familiar to all WordPress users. Can’t place it? The image above should give you a clue… it’s on the Media Settings page in the WordPress admin console. I’m going to make a bold statement here: You should ALWAYS keep it ticked. Read moreThe…

For the last three years I’ve been happily seeing folders at the top of all file lists in my Mac’s Finder windows, thanks to a wonderful little free utility called XtraFinder. Then came El Capitan, with its extra security features, and boom! No more ExtraFinder. Well, if you disable the new security features, XtraFinder will…

The latest version of WordPress, 4.4 (“Clifford”), has rolled out a feature whereby it adds ‘srcset’ attributes to all image tags in order that browsers can decide which image to load if various resolutions are available. This is all well and good, but (a) you may not want these new attributes in your code for…

yum install swig gcc gcc-c++ autoconf automake sed php-devel mkdir -p /opt/stgeorgeipg/ && cd /opt/stgeorgeipg/ wget –user-agent=”Mozilla/5.0 (Windows NT 5.2; rv:2.0.1) Gecko/20100101 Firefox/4.0.1″ https://www.ipg.stgeorge.com.au/downloads/StGeorgeLinuxAPI-3.3.tar.gz tar -xvzf StGeorgeLinuxAPI-3.3.tar.gz cd webpaySWIG-3.3 Once downloaded and extracted, edit the makefilePhp5 as follows: PHP_EXTENSIONS = /usr/local/lib/php/extensions/no-debug-non-zts-20100525 PHP_INCLUDE_DIR = /home/cpeasyapache/src/php-5.4.35/ Note the paths may vary on different PHP versions. make -f…

1. lscpu The lscpu command reports information about the cpu and processing units. It does not have any further options or functionality. 2. lshw – List Hardware A general purpose utility, that reports detailed and brief information about multiple different hardware units such as cpu, memory, disk, usb controllers, network adapters etc. Lshw extracts the…

While doing some work on migrating accounts to a new server, I needed to use rsync over ssh. The ssh daemon on the remote server runs on a non-standard port, and all the port related options to rsync only change settings if you’re running the rsync-daemon. After some searching, the man page of rsync  offered…