Book review: Mastering Vim Quickly From WTF to OMG in no time

Posted on in Categories Reviews last updated November 18, 2017


The vim editor is a free and open source text editor. It is a clone of vi text editor. Vim is extremely popular among the Linux, macOS and Unix-like system users. Vim has many commands. It comes with a pretty extensive built-in manual too. One might get lost in the built-in manual. Let us see if “Mastering Vim Quickly From WTF to OMG in no time” can help a new or experienced vim user to increase productivity.

I put a cronjob in /etc/cron.{hourly,daily,weekly,monthly} and it does not run and how can I troubleshoot it?

Posted on in Categories Cloud Computing, Howto, Open Source, Web Developer last updated August 27, 2017


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 to create a soft link ) in /etc/cron.hourly/ and it doesn’t run. There was no error in systemd log or cron log. Why is my cron job was not working, and here is how I troubleshoot it.

Alpine Linux 3.6.0 has been released

Posted on in Categories Linux News last updated May 27, 2017

Alpine Linux 3.6.0 released
Alpine Linux version 3.6 has been released. Alpine Linux is built around musl libc and busybox. This makes it smaller and more resource efficient than traditional GNU/Linux distributions. A container requires no more than 8 MB, and a minimal installation to disk requires around 130 MB of storage. Not only do you get a fully-fledged Linux environment but a large selection of packages from the repository. Alpine Linux was designed with security in mind. The kernel is patched with an unofficial port of grsecurity/PaX, and all userland binaries are compiled as Position Independent Executables (PIE) with stack smashing protection. These proactive security features prevent exploitation of entire classes of zero-day and other vulnerabilities.

7 Awesome ChatOps Open Source Software For Conversation-driven Development and Management

Posted on in Categories Open Source last updated May 24, 2017

A software bot is nothing but a set of scripts or an independent program that connects to web services or chat services as a client to perform automated functions. Often, bots are deployed from a server. It runs in background and performer various activities such as giving out information, providing an answer to common questions, deleting spam and much more. Here is a list of 7 of them that you must know.
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