<?xml version="1.0" encoding="utf-8" ?> <!DOCTYPE erlref SYSTEM "erlref.dtd"> <erlref> <header> <copyright> <year>1996</year> <year>2013</year> <holder>Ericsson AB, All Rights Reserved</holder> </copyright> <legalnotice> Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. The Initial Developer of the Original Code is Ericsson AB. </legalnotice> <title>shell_default</title> <prepared>Joe Armstrong</prepared> <responsible>Joe Armstrong</responsible> <docno></docno> <approved>Bjarne Däcker</approved> <checked>Joe Armstrong</checked> <date>1996-09-09</date> <rev>A</rev> <file>shell_default.sgml</file> </header> <module>shell_default</module> <modulesummary>Customizing the Erlang Environment</modulesummary> <description> <p>The functions in <c>shell_default</c> are called when no module name is given in a shell command. </p> <p>Consider the following shell dialogue:</p> <pre> 1 > <input>lists:reverse("abc").</input> "cba" 2 > <input>c(foo).</input> {ok, foo} </pre> <p>In command one, the module <c>lists</c> is called. In command two, no module name is specified. The shell searches the modules <c>user_default</c> followed by <c>shell_default</c> for the function <c>foo/1</c>. </p> <p><c>shell_default</c> is intended for "system wide" customizations to the shell. <c>user_default</c> is intended for "local" or individual user customizations.</p> </description> <section> <title>Hint</title> <p>To add your own commands to the shell, create a module called <c>user_default</c> and add the commands you want. Then add the following line as the <em>first</em> line in your <c>.erlang</c> file in your home directory. </p> <pre> code:load_abs("$PATH/user_default"). </pre> <p><c>$PATH</c> is the directory where your <c>user_default</c> module can be found.</p> </section> </erlref>