1)Define a deamon?

2)Can we use crontab to run a script per second? if yes how? if no why?

3)How to create a deamon with shell scripting?

4)What is DDNS and how it works?

5)Which mail server is secure  Sendmail or Postfix?

6)How can i check exit status of my the previous command?

7)I have a file each line contains “/var/www/html”, replease this entry in all lines with “/home/xyz/red”  with single command or an editor

8)How can you configure DNS caching server?

9)Please give me syntax for a FOR look in Bash scripting(please specify 2 types too)

10)What is the difference between crontab and at command?

11)What is the best project you done till this point?(Any considerable achievement till this point in your domain?)


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Mr Surendra Anne is from Vijayawada, Andhra Pradesh, India. He is a Linux/Open source supporter who believes in Hard work, A down to earth person, Likes to share knowledge with others, Loves dogs, Likes photography. He works as Devops Engineer with Taggle systems, an IOT automatic water metering company, Sydney . You can contact him at surendra (@) linuxnix dot com.