This article will show you how to Telnet via BASH script and return the status as open or close. This has been tested on CentOS/RedHat and hopefully should work on all other Linux distributions as well.
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I wanted to share my experience building a ESXi HOME LAB with VPN access that can be used for development and testing purposes and also making sure its the most energy efficient setup and light on your pocket coupled with good performance and negligible noise.
This article is aimed at Home users and Small & Medium business users who don't have huge needs to running resource hungry applications/databases instead just running some WEB applications, NAS, Windows AD or RedHat Infra and media sharing across the network for multiple users.
- vCenter
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How to update vCenter Server Appliance
Its easy to update vCenter Server Appliance and can be done using the WEB interface of vCSA. In this article I upgraded from v5.5.0 Update2b to v5.5.0 Update 2d. Take a snapshot of vCenter Server Appliance before you update just to be on a safe side if things go wrong.
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When using IPA for managing user authentication you can come across this issue of SSH dropping just after a password change. It can be resolved by changing options in /etc/ssh/sshd_config. You need to be ROOT to make this change and restart SSHD service to take effect.
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- Linux
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How to Show Line Numbers in Vi / Vim editor
Showing Line numbers in Vi /Vim Text editor would be very helpful when it comes to troubleshooting code errors in a file. This works on almost all Linux/UNIX distributions. Once you are in the edit file mode, Type while in edit mode ":set nu" OR ":set number" and then it will show you the Line numbers and then you can jump to a specific line by typing ":number" or any line number you require.
Add a comment- RasberryPi 2 Now Available - Quad Core ARM7 and 1GB RAM
- Get email when Public IP address changes using RasberryPi
- How to reduce LVM size & reuse free space on the fly
- Extend LVM partition to >2TB. No need for GPT, Parted or Kernel editing
- Change "eth0" interface name and reload udev rules without a reboot
