For loop in bash

An example of for loop in bash [crayon-5f364bebe615a332351959/] … [Read more...]

One line command to generate Self-signed SSL on linux

We all generate self-signed SSL certificate for development and local usage. Here is one liner command to quickly generate self signed SSL with key. How to generate Self-Signed SSL certification with online command! [crayon-5f364bebe647f904004121/] … [Read more...]

How to install selinux on CentOS 7 ?

Security-Enhanced Linux (SELinux) is a Linux kernel security module that provides a mechanism for supporting access control security policies, including mandatory access controls (MAC).¬†SELinux¬†is a set of kernel modifications and user-space tools that have been added to various Linux distributions. [source] CentOS7 comes with selinux installed by default however some basic images of CentOS7 do … [Read more...]

How to avoid .DS_Store file creation?

If you are a MacOS user then you must have seen creation of .DS_Store file automatically inside folders which is sometimes quite annoying. .DS_Store files store folder level meta data information. However that is completely fine in MacOS. But there is a work around to avoid creation of .DS_Store files if you are annoyed of it. Specially if you are a developer and those .DS_Store files are created … [Read more...]

How to delete .DS_Store from an existing git repository?

If you are using Mac OS for development then you must have seen .DS_Store files created automatically which is quite painful. However there is a work around to delete it from an existing git repository using following few commands. [crayon-5f364bebe67ca522450691/] Above command will delete all .DS_Store files, and now you can add in .gitignore file to avoid commit of this file in … [Read more...]

Configuring hostname in Ubuntu 18.04.2 LTS (Bionic Beaver)

Changing hostname in Ubuntu 18.04.2 LTS is different from previous versions. You can use following command [crayon-5f364bebe68e4130566448/] After this you need to set preserve hostname setting in /etc/cloud/cloud.cfg From [crayon-5f364bebe68e7841322803/] TO [crayon-5f364bebe68e8866012104/] This will preserve new hostname after reboot. … [Read more...]

Configuring Static IP in Ubuntu 18.04.2 LTS (Bionic Beaver)

The method of configuring static ip in Ubuntu 18.04.2 LTS is different from its previous variants. Previously it was to configure in /etc/network/interfaces file, however in Ubuntu 18.04.2 LTS, it is setup in /etc/netplan/50-cloud-init.yaml file. [crayon-5f364bebe6a1e636420813/] Content of this file is [crayon-5f364bebe6a21892434843/] I have edited this file like … [Read more...]

Debian – Systemd to kill all user processes after logout in release/version 230

  A bug is reported to Debian related to systemd. [crayon-5f364bebe6ba0341699034/] [crayon-5f364bebe6ba3534808641/] [crayon-5f364bebe6ba4325101894/] [crayon-5f364bebe6ba5873179147/] [crayon-5f364bebe6ba6199735532/] … [Read more...]

Amazon web services (aws) data centers locations

This is second post of my experience with Amazon web services (aws) series. Click here to read My first experience with Amazon Web Services.   Although Amazon documentation claims that they are offering services in 12 geographic location, however all I see 10 options in my account for available aws locations/aws datacenters.   US East (N. Virginia) US West (N. … [Read more...]