The cw executable | CW - learn and develop morse

Using the cw command line executable.

Running cw

In addition to running your cw scripts by typing:

ruby script.rb

CW also provides an executable called cw, which can be used instead.

The cw command also provides additional functionality, making it easy to run several scripts in a row, and / or repeat a single or multiple scripts several times.

cw command format

In its simplest form, the cw command is used as follows:

cw script_name.rb

Alternatively the script extension may be left off altogether (so long as the extension is .rb):

cw script_name

Note: Since the cw script is written in Ruby syntax, giving it the extension .rb allows many text editors to automatically syntax-highlight the file, in addition to performing static syntax checking. You may however choose to have no extension.

Run multiple scripts

It is also possible to call multiple scripts to be run one after the other. In this case the scripts to run are seperated by whitespace:

cw script_1 script_2

Run a script or multiple scripts more than once.

If the last argument supplied to cw is a number, the preceding script or scripts will be repeated.

For example, the following command will run script.rb twice:

cw script.rb 2

Here we will run script_1.rb and script_2.rb three times. Notice the extensions aren’t supplied:

cw script_1 script_2 3

Tags: