sudo add-apt-repository ppa:git-core/ppa
sudo apt-get update
sudo apt-get install git
Then create account in GIT, to do that you can go to [1] https://github.com/
Once we are done with the GIT account creation, the next step is to create a repository. for example I have created a repository as below:
Now we are ready to go through the scenario's where we encounter in programming.
1) Moving the local files to a New GIT Repository.
- For this I have created a folder with two files as below:
- Then execute the below command inside the folder.
ajanthan@ajanthan-Lenovo:~/testgitrepo$ git init
Initialized empty Git repository in /home/ajanthan/testgitrepo/.git/
ajanthan@ajanthan-Lenovo:~/testgitrepo$
- Then execute the below:
ajanthan@ajanthan-Lenovo:~/testgitrepo$ git add .
- Before commit the files we need execute the below command, to tell our folder, under what account need to commit the files.
ajanthan@ajanthan-Lenovo:~/testgitrepo$ git config --global user.email "ajanthaneng@gmail.com"
ajanthan@ajanthan-Lenovo:~/testgitrepo$ git config --global user.name "ajanthanerepo"
- Now execute the below:
ajanthan@ajanthan-Lenovo:~/testgitrepo$ git commit -m "Test commit"
[master (root-commit) 2d6bc85] Test commit
2 files changed, 4 insertions(+)
create mode 100644 README.md
create mode 100644 test.json
- Now we need to specify the repository where the local files need to be moved, to that execute the below command, mentioning the repository url.
ajanthan@ajanthan-Lenovo:~/testgitrepo$ git remote add origin https://github.com/ajanthanerepo/test-repo-ajan1
ajanthan@ajanthan-Lenovo:~/testgitrepo$ git remote -v
origin https://github.com/ajanthanerepo/test-repo-ajan1 (fetch)
origin https://github.com/ajanthanerepo/test-repo-ajan1 (push)
ajanthan@ajanthan-Lenovo:~/testgitrepo$
- When we go to the repository still we couldn't see any files added, once we execute the below, then only the files will be moved from local.
ajanthan@ajanthan-Lenovo:~/testgitrepo$ git push origin master
Username for 'https://github.com': ajanthaneng@gmail.com
Password for 'https://ajanthaneng@gmail.com@github.com':
Counting objects: 4, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (2/2), done.
Writing objects: 100% (4/4), 290 bytes | 290.00 KiB/s, done.
Total 4 (delta 0), reused 0 (delta 0)
To https://github.com/ajanthanerepo/test-repo-ajan1
* [new branch] master -> master
ajanthan@ajanthan-Lenovo:~/testgitrepo$
- Now we can see our files moved successfully.
- Also we can create a branch using the below commands.
ajanthan@ajanthan-Lenovo:~/testgitrepo$ git branch testbranch
ajanthan@ajanthan-Lenovo:~/testgitrepo$ git status
On branch master
nothing to commit, working tree clean
ajanthan@ajanthan-Lenovo:~/testgitrepo$ git checkout testbranch
Switched to branch 'testbranch'
ajanthan@ajanthan-Lenovo:~/testgitrepo$ git status
On branch testbranch
nothing to commit, working tree clean
ajanthan@ajanthan-Lenovo:~/testgitrepo$ git push -u origin testbranch
Username for 'https://github.com': ajanthaneng@gmail.com
Password for 'https://ajanthaneng@gmail.com@github.com':
Total 0 (delta 0), reused 0 (delta 0)
To https://github.com/ajanthanerepo/test-repo-ajan1
* [new branch] testbranch -> testbranch
Branch 'testbranch' set up to track remote branch 'testbranch' from 'origin'.
ajanthan@ajanthan-Lenovo:~/testgitrepo$
2) Cloning a remote repository and committing to that repository.
This is a most common scenario, where we clone a repository and do modifications and then commit those changes.
As the previous is a public repository, it is possible to directly clone the repo as below:
ajanthan@ajanthan-Lenovo:~/testrepo4$ git clone https://github.com/ajanthanerepo/test-repo-ajan1.git
Cloning into 'test-repo-ajan1'...
remote: Counting objects: 4, done.
remote: Compressing objects: 100% (2/2), done.
remote: Total 4 (delta 0), reused 4 (delta 0), pack-reused 0
Unpacking objects: 100% (4/4), done.
ajanthan@ajanthan-Lenovo:~/testrepo4$ ls
test-repo-ajan1
ajanthan@ajanthan-Lenovo:~/testrepo4$
Then I'm modifying the test.json file after that getting the diff.
ajanthan@ajanthan-Lenovo:~/testrepo4/test-repo-ajan1$ vi test.json
ajanthan@ajanthan-Lenovo:~/testrepo4/test-repo-ajan1$
ajanthan@ajanthan-Lenovo:~/testrepo4/test-repo-ajan1$
ajanthan@ajanthan-Lenovo:~/testrepo4/test-repo-ajan1$
ajanthan@ajanthan-Lenovo:~/testrepo4/test-repo-ajan1$ git diff test.json
diff --git a/test.json b/test.json
index e20351f..4adce1d 100644
--- a/test.json
+++ b/test.json
@@ -1,3 +1,3 @@
{
-"ajanthan":"test"
+"ajanthanee":"test"
}
ajanthan@ajanthan-Lenovo:~/testrepo4/test-repo-ajan1$
Now going to commit the changes, before that check the URLs.
ajanthan@ajanthan-Lenovo:~/testrepo4/test-repo-ajan1$ git remote -v
origin https://github.com/ajanthanerepo/test-repo-ajan1.git (fetch)
origin https://github.com/ajanthanerepo/test-repo-ajan1.git (push)
ajanthan@ajanthan-Lenovo:~/testrepo4/test-repo-ajan1$ git add test.json
ajanthan@ajanthan-Lenovo:~/testrepo4/test-repo-ajan1$ git commit -m "added by ajanth"
[master ee7a1c2] added by ajanth
1 file changed, 1 insertion(+), 1 deletion(-)
ajanthan@ajanthan-Lenovo:~/testrepo4/test-repo-ajan1$
Now do the push.
ajanthan@ajanthan-Lenovo:~/testrepo4/test-repo-ajan1$ git push
Username for 'https://github.com': ajanthan005@yahoo.com
Password for 'https://ajanthan005@yahoo.com@github.com':
Counting objects: 3, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (2/2), done.
Writing objects: 100% (3/3), 300 bytes | 300.00 KiB/s, done.
Total 3 (delta 0), reused 0 (delta 0)
To https://github.com/ajanthanerepo/test-repo-ajan1.git
2d6bc85..ee7a1c2 master -> master
ajanthan@ajanthan-Lenovo:~/testrepo4/test-repo-ajan1$
Consider that the ajanthanerepo2 has updated the file test.json. Due to that we need to update the local repository of ajanthanerepo. To do that we need to pull as below:
ajanthan@ajanthan-Lenovo:~/testgitrepo$ git pull origin master
remote: Counting objects: 6, done.
remote: Compressing objects: 100% (4/4), done.
remote: Total 6 (delta 0), reused 3 (delta 0), pack-reused 0
Unpacking objects: 100% (6/6), done.
From https://github.com/ajanthanerepo/test-repo-ajan1
* branch master -> FETCH_HEAD
2d6bc85..c8cc9ef master -> origin/master
Updating 2d6bc85..c8cc9ef
Fast-forward
test.json | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
To confirm we can do a cat and see the file content.
ajanthan@ajanthan-Lenovo:~/testgitrepo$ cat test.json
{
"ajanthanee":"test-edited by repo2"
}
ajanthan@ajanthan-Lenovo:~/testgitrepo$
Hope this helps someone who starts with GIT...
