Answer (Macua)

exercise/Part-1.md

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+# **Logging in**
+
+The following are procedures for logging in to the COARE HPC via the following OS: Windows, Mac, and Linux.
+
+## **Table of contents**
+
+- [For Windows](#for-windows)
+  - [PuTTY](#putty)
+  - [Command Prompt (for Windows 10 only)](#command-prompt-for-windows-10-only)
+- [For Mac/Linux](#for-mac--linux)
+
+## **For Windows**
+
+For Windows, users have two options to use in logging in: PuTTY or Command Prompt.
+
+### **PuTTY**
+
+1. Download and run PuTTY application.
+
+   - 32-bit: https://the.earth.li/~sgtatham/putty/latest/w32/putty.exe
+   - 64-bit: https://the.earth.li/~sgtatham/putty/latest/w64/putty.exe
+
+2. Set port number to **22** and the **Host Name** to **saliksik.asti.dost.gov.ph.**  
+   ![putty_2.png](/images%20for%20exercise/Part-1/putty_2.png)
+
+3. On the left panel under Category, collapse the **Connection** option and select the **SSH** option, and then click **Auth**. Select Browse to attach your **private key** (.ppk file) for authentication. Then click **Open**.  
+   ![putty_3.png](/images%20for%20exercise/Part-1/putty_3.png)
+
+4. Select **Yes** when prompted by a PuTTY Security Alert Window.  
+   ![putty_4.png](/images%20for%20exercise/Part-1/putty_4.png)
+
+5. When the terminal opens, enter your COARE credentials that should have been sent to your email.
+
+6. You are now inside the HPC frontend if you see this (see image below) on your terminal.  
+   ![putty_6.png](/images%20for%20exercise/Part-1/putty_6.png)
+
+### **Command Prompt (for Windows 10 only)**
+
+1. Open **Command Prompt** or **Windows PowerShell**.
+2. Type command:
+
+```
+ssh <username>@saliksik.asti.dost.gov.ph
+```
+
+Useful options:
+|Flag |Description |
+|:--- |:--- |
+| -i <private-keys> | Indicate the private key to be used |
+|-v | Increase verbosity |
+| -vv, -vvv | Enable additional verbosity for even more debugging messages |
+
+3. Type **Yes** to add the host in your known hosts.  
+   ![cmd_3.png](/images%20for%20exercise/Part-1/cmd_3.png)
+
+4. You should now be inside the HPC frontend.  
+   ![cmd_4.png](/images%20for%20exercise/Part-1/cmd_4.png)
+
+# **For Mac / Linux**
+
+1. Launch your Terminal application and type:
+
+```
+ssh <username>@saliksik.asti.dost.gov.ph
+```
+
+Useful options:
+|Flag |Description|
+|:--- |:--- |
+| -i <private-keys> | Indicate the private key to be used |
+|-v | Increase verbosity |
+| -vv, -vvv | Enable additional verbosity for even more debugging messages |
+
+3. Type **Yes** to add the host in your known hosts.  
+   ![mac-linux_2.png](/images%20for%20exercise/Part-1/mac-linux_2.png)
+
+4. You should now be inside the HPC frontend.  
+    ![mac-linux_3.png](/images%20for%20exercise/Part-1/mac-linux_3.png)  
+   NOTE: Logging in must be passwordless unless you have a passphrase during the generating of keys.

exercise/Part-2.md

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+This is a paragraph. First Line.  
+Next line.  
+Third line.  
+There should be no extra spacing between each line.  
+**_This line is both italic and bold!_**
+
+There is a blank space above.  
+This <sub>line</sub> of <sup>text</sup> is <sub>wavy</sub>
+
+**MY favorite equation is:**
+$$\frac{-b\pm\sqrt{b^2-4ac}}{2a}$$

exercise/Part-3.md

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+# Exercises
+
+- [x] Part 1- [Solution](/exercise/Part-1.md)
+- [x] Part 2- [Solution](/exercise/Part-2.md)
+- [x] Part 3- [Solution](/exercise/Part-3.md)
+
+By: [Joichi Mikko M. Macua](mailto:joichi.macua@smc.pshs.edu.ph)