chapter_2

Exercises for Chapter 2

1. Start and stop the Erlang shell

To start the shell run erl:

$ erl
Erlang R16B01 (erts-5.10.2) [source] [64-bit] [smp:8:8] [async-threads:10] [hipe] [kernel-poll:false]

Eshell V5.10.2  (abort with ^G)
1>

Then to exit the shell run:

^C
BREAK: (a)bort (c)ontinue (p)roc info (i)nfo (l)oaded
       (v)ersion (k)ill (D)b-tables (d)istribution

Then type a.

2. Run a few commands in the shell

$ erl
Erlang R16B01 (erts-5.10.2) [source] [64-bit] [smp:8:8] [async-threads:10] [hipe] [kernel-poll:false]

Eshell V5.10.2  (abort with ^G)
1> Text = "Hello World~n". %% Here we assign a list/string to the variable `Text`
"Hello World~n"
2> io:format(Text). %% Here we print the variable `Text` with io:format/1
Hello World
ok
3>

3. Make a small modification to hello.erl

I updated it by allowing it to take an a single argument and greet the variable instead of World. See source file in exercise_3/.

4. Run the client and server code

The source files are the exercise_2 directory. A put_file/3 function as been added to the client. The server has also been updated to handle the new command.