When executing the apt-get update command, you may get “There is no public key available” warning message. This article explains how to solve this warning message message. $ apt-get update Get:1 http://debian.linux.org.tw lenny Release.gpg [394B] Get:2 http://debian.linux.org.tw lenny Release [73.6kB] Get:3 http://debian.linux.org.tw lenny/main Packages [5310kB] Fetched 5384kB in 1m13s (73.5kB/s) Reading package lists... Done W: [...]
Ramesh Natarajan
If your internet speed is really slow, you may want to identify your current upload and download speed in Mb/s before calling your ISP provider. There are lot of websites out there you can use to calculate the speed. This article explains how to perform the internet bandwidth speed using speedtest.net. If you use some [...]
Disk space is never enough. On an on-going basis system administrators will be getting request to increase the disk space on a server. In this article, let us review how to add new physical disks and create a virtual disk with a RAID configuration on an DELL PowerEdge Server using PERC 6/i Integrated BIOS Configuration [...]
A while back we discussed about 12 powerful PuTTY add-ons. When you are working on production support or on a critical project that require 24×7 support, it is essential that you connect to the remote Linux server from anywhere. I found having a SSH client on my phone is very convenient for a quick status [...]
Earlier we discussed about how to install PostgreSQL database on Linux from source. In this article, let us review top 15 practical postgreSQL DBA command examples. If you are a mySQL administrator, check-out our 15 examples of mysqladmin command article that we discussed a while back. 1. How to change PostgreSQL root user password ? [...]
Similar to mySQL, postgreSQL is very famous and feature packed free and open source database. Earlier we’ve discussed several installations including LAMP stack installation, Apache2 installation from source, PHP5 installation from source and mySQL installation. In this article, let us review how to install postgreSQL database on Linux from source code. Step 1: Download postgreSQL [...]
Email administrators may set a limit on the maximum attachment size that can be attached to an email. You can follow the steps mentioned below to transfer big files that cannot be attached to the email because of the attachment size restriction. This technique can be used in general whenever you need to split huge [...]
This article is written by SathiyaMoorthy. This article is part of the on-going Vi / Vim Tips and Tricks Series. In this article, let us review how to use Vim Editor for composing email in Thunderbird. External editor Plugin does the magic of composing email in Vi/Vim editor easily, allowing us to [...]