tep1: Create a repository @github ---> git.cse.iitk.ac.in

Step2: git clone git@git.cse.iitk.ac.in:deba/classdemo.git

Step3: $ cd classdemo

        $ vim README.md

        $ Add this content to README.md

Step4: $ git add README.md

        $ git commit -am "adding readme"

        $ git push
             OR 
        $ git push -u origin master   

        $ mkdir base
      
        $ cd base
 
        $ vi sample.c         /*Add a new file, create some content*/

        $ cd ..

        $ git add base

        $ git commit -m "adding base"

        $ git push    

Log: $ git log -p

         $ git log --stat

         $ git log -p README.md

         $ git help log

diff: $ git diff README.md

         $ git diff 

revert:

         $ git revert HEAD~0

         $ git commit -am "revert" 

         $ git push
       
         $ git add base/newsample.c 
        
         $ git commit -m "add newsample.c" 
          
         $ git revert HEAD~0
       
         $ git commit -am "update readme"
         
         $ git push
         
         $ git revert HEAD~1    /*Revert the revert*/
         
         $ git push

conflicts:

         Create a separate clone of the git repository

         In localA:
         
         $ git add base/newfile

         $ git commit 

         $ git push

         In localB:
         
         $ git add base/vimp.c
         
         $ git commit 

         $ git push              /*A pull required before push*/
         
         /*Modifying the same file*/