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Short Cut Command In Linux In this article I an going to describe some short cut command which are very helpful while performing certain task such as editing file,controlling process . For Screen:  These command used while doing activities on screen like: ctrl+l :  Clear the screen,same as 'Clear' command    ctrl+s : pause output on screen.if we have run a command that have long verbose out put we use this command, pause it and do another work along running that command. ctrl+q: resuming pause . File Editing:   These command used while writing or editing a file: ctrl+a: Move the cursor to the start of the line. ctrl+e: move the cursor to the end of the line. ctrl+b: move the cursor back one character at time. ctrl+f: move the cursor forward one character at time. ctrl+d: delete the character under the cursor ctrl+k: remove all textfrom the cursor through end of the line. ctrl+x: remove all the text from the cursor through begning of the li
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Postfix installation Step by step I have already posted on Zimbra mail service, now i am going to share  how to install and configure postfix mail server using devocot and squrell mail service, suggest you go into detail study of post fix and other mail server before going to install and use, and different mail protocol i will publish all these on my later edition.Here i  am  going to tell you some future of post fix mail server,and why we choose postfix. What is post fix? Postfix is an open-source Mail Transport Agent ( MTA ), which supports protocols like LDAP, SMTP AUTH (SASL), and TLS. Operating systems: Postfix runs on every Unix and Linux Operating syst em,It is the default MTA of Linux and Ubuntu  operating systems.To install Post fix first we need to uninstall default post fix. Architecture: Postfix consists of a combination of server programs that run in the background, and client programs that are inv