## Installing the oc CLI Tool for OpenShift
oc command line tool is used to access the Openshift cluster through the command line.

This gives more flexibility as compared to the web interface.

### Downloading
**Linux**: For Linux 64 bits, download the following link
 -  [Linux 64-bit OpenShift oc download](https://github.com/openshift/origin/releases/download/v1.5.1/openshift-origin-client-tools-v1.5.1-7b451fc-linux-64bit.tar.gz)
```shekk
wget https://github.com/openshift/origin/releases/download/v1.5.1/openshift-origin-client-tools-v1.5.1-7b451fc-linux-64bit.tar.gz
```
**MAC**: [MAC OpenShift oc download](https://github.com/openshift/origin/releases/download/v1.5.1/openshift-origin-client-tools-v1.5.1-7b451fc-mac.zip)

**Windows**: [Windows OpenShift oc Download](https://github.com/openshift/origin/releases/download/v1.5.1/openshift-origin-client-tools-v1.5.1-7b451fc-windows.zip)

Now, extract the downloaded file.

In **linux** use tar
```shell
tar –xvf openshift-origin-client-tools-v1.5.1-7b451fc-linux-64bit.tar.gz
```

To find the latest version, go to [oc releases](https://github.com/openshift/origin/releases) 
and scroll down to the downloads section.

Now, you might want to change the name of the file to something small. Use the mv command for the same.
```shell
mv openshift-origin-client-tools-v1.5.1-7b451fc-linux-64bit oc-tool
```
If you do ls, you should find the folder oc-tool. Go into the folder using cd
```shell
cd oc-tool
```
In this folder, you will find the oc command which will be used for all operarions.

To avoid typing `./oc` every time, store this path in your `.bashrc` file.
```shell
export PATH=<HOME>/oc-tool:$PATH
```
Now to login, do
```shell
oc login
```
You will be asked for the url of your openshift cluster.

Enter the complete url with the port number and hit enter.
```shell
ubuntu@vm:~/oc-tool$ oc login

Server [https://localhost:8443]: https://128.XX.XX.XX:8443
```
Now enter your username and password.

After successful, login you will be able to see your projects in your account.

To switch between projects use
```shell
oc project <project-name>
```