Install Cygwin on Windows 7

One way to play linux on Windows machine

This is the HP laptop I am using:

Choose Start > Control Panel > System

Windows 7 Professional SP1 64-bit

Go to https://www.cygwin.com and click the link setup-x86_64.exe.

Follow the instructions on screen.

I simply choose a mirror site of University of Waterloo.

Double click Cygwin icon to launch it.

To change the font size right click the top bar and select Options…

Choose Text > Select…

I like Segoe UI Mono with size 16.

Let’s create a simple Java program to showcase working under Cygwin.

Create subdirectories.

An Sheng@An-HPLaptop ~
$ java -version
java version "1.8.0_45"
Java(TM) SE Runtime Environment (build 1.8.0_45-b15)
Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)
An Sheng@An-HPLaptop ~
$ pwd
/home/An Sheng
An Sheng@An-HPLaptop ~
$ ls -l
total 0
An Sheng@An-HPLaptop ~
$ mkdir developer
An Sheng@An-HPLaptop ~
$ ls -l
total 0
drwxr-xr-x+ 1 An Sheng None 0 Jan 11 00:42 developer
An Sheng@An-HPLaptop ~/developer
$ mkdir java
An Sheng@An-HPLaptop ~/developer
$ cd java/

Create Java source file CChess.java:

An Sheng@An-HPLaptop ~/developer/java
$ vi CChess.java

Here is the code of CChess.java:

class CChess {
  public static void main(String[] args) {
    System.out.println("Hello, World!");
  }
}

Compile and run CChess.java:

An Sheng@An-HPLaptop ~/developer/java
$ javac CChess.java
An Sheng@An-HPLaptop ~/developer/java
$ ls -l
total 2
-rwxr-xr-x 1 An Sheng None 419 Jan 11 11:53 CChess.class
-rw-r--r-- 1 An Sheng None 107 Jan 11 00:47 CChess.java
An Sheng@An-HPLaptop ~/developer/java
$ java CChess
Hello, World!
An Sheng@An-HPLaptop ~/developer/java
$

Try some other linux commands like date, cal, cat and wc -l.

$ date
Sun, Jan 12, 2020  5:16:01 PM
An Sheng@An-HPLaptop ~
$ cal
    January 2020
Su Mo Tu We Th Fr Sa
          1  2  3  4
 5  6  7  8  9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31
An Sheng@An-HPLaptop ~
$ cat developer/java/CChess.java
class CChess {
  public static void main(String[] args) {
    System.out.println("Hello, World!");
  }
}
An Sheng@An-HPLaptop ~
$ wc -l developer/java/CChess.java
6 developer/java/CChess.java
An Sheng@An-HPLaptop ~
$