Good to know:

• Almost none of these commands work in DrJava's "Interactions" pseudo-terminal.
• To test if stdlib.jar is available to Java, type java-introcs StdOut. If working, it will print 4 different data types. You can repeat with StdIn, StdDraw, StdAudio. If not working, ask course staff. Can be caused by moving/deleting files installed by installer.
• Tab completion. If you are trying to move into a directory named myVeryLongNameDir, type cd m and then press Tab. The rest will be typed automatically for you. (If there are multiple possible completions, look at what is printed and/or press Tab some more.) Extra useful for filenames with spaces.
• History. Press the up key (repeatedly) to see the previous command(s). You can edit and re-run them.

Action	Windows Command Prompt	Mac OS X Terminal
What is my current directory?	cd	pwd
Show contents of current directory	dir	ls
Move to subdirectory "sub" (relative path)	cd sub
Move to parent directory	cd ..
Move to your user directory (absolute path) (Note different slashes!)	cd \Users\username (Use c: first if on different drive)	cd /Users/username
View the contents of file "filename"*	more filename
Compile MyClass.java w/ Std libraries†	javac-introcs MyClass.java
Run program MyClass with Std libraries†	java-introcs MyClass arg0 arg1 ...
Redirect standard input from file "infile"†*	java-introcs MyClass arg0 arg1 ... < infile
Redirect standard output to file "outfile"†*	java-introcs MyClass arg0 arg1 ... > outfile
Pipe: make output of command1 the input to command2	command1 | command2
Examples of combining the above†*	java HelloWorld | java-introcs Sort > hi.txt java-introcs Sort < input.txt > output.txt
Terminate program	Control-C (this is not Copy!)
Copy text (to clipboard)	Drag-select w/mouse, then Enter	Drag-select with mouse
Paste text (at current cursor)	Right-click in terminal/command prompt window
End of typed-in standard input (EOF)	Control-Z on own line then Enter	Control-D
For extra fun: delete, move, copy file make dir, remove dir, find text in file, append	del move copy mkdir rmdir find	rm mv cp mkdir rmdir grep >>

^*: commands for reading/writing assume file is exactly in your current directory, else add relative/absolute path
^†: the .java and .class files have to be exactly in your current directory