The famous question i often hear is “Is swap really necessary”

Well its not really mandatory to have swap.Many people,including me run swapless systems without trouble,so if you really want to go without swap, there’s no real reason not to if you’ve got enough RAM.But if u got anything less than or equal to 1 GB,i would recommend you to have atleast swap of 1-1.5 times of your RAM.the rationale behind the number is simple and it is for hibernation.This article deals with creating swapfile if you forgot to create one during install. Read the rest of this entry »

Originally the shell used in UNIX was sh which stands for shell.Bash is the GNU replacement of sh, and also an extension of it which stands for Bourne-Again Shell.I use bash a lot, and I like it,so I thought I should share my experience with it .Have you ever thought of customising your shell. Read the rest of this entry »

Just to give a heads up on what DNS resolver cache is,It is the cached results of DNS queries by DNS clients(ex Browsers)to speed up multiple lookups to the same URL.So if u browse a site for say 2 hours,imagine how many requests are made to the same domain.So it is better to cache the DNS response in order to fasten the browsing. Read the rest of this entry »