Add "Useful Git Commands" page

Useful-Git-commands.md

@@ -1,29 +1,53 @@
-### Branches
-* list all branches (incl. remotes)
+> [Wiki](Home) ▸ [Development](development) ▸ **Useful Git Commands**
 
-> `git branch -a`
-> 
-> * master
-> 
->   remotes/origin/14.2
+Useful Git Commands
+=======
 
-* switch to a branch you never checked out before, eg. above 14.2, and set up tracking
+### Status
+Getting current status of repository which would show modified/merged/stashed files or commits that need to be pushed.
 
-> `git branch --track <branch> origin/<branch>`
+```git status```
+***
 
-* switch to branch existing on your local repo
+### Branch
+In order to get list of branches or create one.
 
-> `git checkout <branch>`
+List of branches: ```git branch -a```
 
-* merge a commit from a different branch (after pulling/fetching!)
+Create branch: ```git branch <your branch name>```
 
-> `git cherry-pick <sha1>`
+Delete branch: ```git branch -b <branch name>```
 
-* merge a not pushed commit from a different local repository
+switch to another branch: ```git checkout <branch name>```
+<br> e.g.: ```git checkout 17.1```
 
-> `git --git-dir=../<some_other_repo>/.git format-patch -k -1 --stdout <commit SHA> | git am -3 -k`
+***
+### Merge
+Sometimes we need to merge our branch with master.
+```
+git checkout <your branch>
+git rebase master
+```
 
-* remove empty commits after import of partial repo via Github importer
-(has to be done with every branch and everyone has to clone the repo again!)
+or when we want to merge only a single commit into our branch from another branch (e.g. backporting):<br>
+```
+git cherry-pick <commit hash>
+```
+`--no-commit`: this will help if you don't want your cherry-pick be committed right after.
 
-> git filter-branch -f --commit-filter 'git_commit_non_empty_tree "$@"' HEAD; git push -f
+***
+
+### Revert
+For reverting uncommitted changes on files you may run the following:
+```
+git checkout <filename>
+```
+and for reverting commits which are not pushed you may use:
+```
+git reset --hard <commit hash>
+```
+or if you want to go back to latest previous commit:
+```
+git reset --hard HEAD^
+```
+> **IMPORTANT:** *reset with `--hard` parameter reset your commits and you may no longer have access to your changes.*