Yesterday I gave presentations on Topics: Sed command, Find command and Domain name system (DNS)
Its truly said that practice makes man perfect. Well its true in case of women also :p
Firstly only the idea of facing others makes me nervous, But now a confidence is build into me which is getting stronger day by day.
Apart from this I got to know about Helix bridge, ls command in linux and Story of Aaron Swarts.
I learnt from my experience that I should be 110% :p prepared, I should be able to transfer my knowledge among others. I will try to know about the meaning of each and every term I am using in my project from now.
I will be giving short glimpses of the topics and will answer all the queries of GD members.
I. “POWER OF FIND”
Type find . for current directory ( Here . is the current directory ) Apart from this,
.. is the folder above the current folder – the folder that contains the current folder.
Q. What is the Importance of terminal over GUI?
Though both excel in different matters. But there are somethings which can easily be accomplished using command prompt.
1.Scripts are a powerful thing. You can use conditions
if and loops
for etc.. and do all sorts of things.There is no limit to the power of scripting. This makes complex tasks easy to some extend.For such things, it is often hard to find a GUI app that matches your requirement.
- It is simply faster. It is much quicker to type a few alphabets and press TAB than to click though endless menu options.It takes less time and easy to type.
We can access multiple files using terminal in less time.
we can use experimental server so easily using terminal ( Talking about my case here :p )
Q. What to prefer to play music, GUI or terminal?
The easier way is GUI. But it is possible using terminal also. Wait for my next blog to see its procedure 😉
Q. Difference between find ./test and find test? “OR” What is the benefit of ./ in case of (find ./test)?
Both will search for test directory.
But, Prepending the command with
./ effectively says “forget about the PATH, I want you to look only in the current directory.”
Q. Difference between -name and -iname? “OR” What is significance of using -iname (i.e find ./text -iname “*.php” )?
name is case sensitive but iname is case insensitive. This is the basic difference and ‘i’ mainly stands for ignore.
Q. What is the significance of ls -s?
ls stands for list and s here is size. So basically, it displays the size of files.
Q.DNS vs File system
In DNS (DOMAIN NAME SYTEM), Information related to mapping is distributed in parts on various computers(servers). But in file system this information is shared and is kept in a single computer system whose access is given to all other which give request for mapping.
Q.Is google.com. and google.com same?
Yes google.com and google.com. are same. Both direct you to the page of google. But difference is only in notation i.e google.com is FQDN (fully qualified domain name) and google.com. is PQDN(partially qualified domain name) in which we can terminate the end null string.
Q.How many number of DNS servers present under root?
There can be atmost 128 levels possible under root.
Q.Where is ISP present?
ISP(Internet service providers) is present from where we are getting internet. eg: If I am having a Airtel connection, then my current ISP is my current Internet Service Provider(AIRTEL)
Q.What is the use of Port?
port is an endpoint of communication in an opearating system. A port is identified for each address and protocol by a 16-bit number, commonly known as the port number.
Q.How is our Internet managed?
Internet Ecosystem is the term used to describe the organizations and communities that help the Internet work and evolve. These organizations share common values for the open development of the Internet.
Technologists, engineers, architects, creatives, organizations such as theInternet Engineering Task Force (IETF) and the World Wide Web Consortium(W3C) who help coordinate and implement open standards.
Global and local Organizations that manage resources for global addressing capabilities such as the Internet Corporation for Assigned Names and Numbers(ICANN), including its operation of the Internet Assigned Numbers Authority(IANA) function and Registrars.
Operators, engineers, and vendors that provide network infrastructure services such as Domain Name Service (DNS) providers, network operators, and Internet Exchange Points (IXPs)
Q.What if the server is present in India. Do the user still need to go to USA?
NO, if server is in India we don’t need to consult USA. We will type for anything it will be directed to closest server but verification is needed by USA servers as they are having billions of info nad we are having millions of. This is because of time gap.
For more info refer to my previous Blogs 😉
Stay tuned 🙂