Serve as a reference reminding you how to perform certain tasks.The advantages of such scripts are that they: But in general, if you put the script in a directory like ~/bin, that is on your path, you can just type the name of the script, using tab completion to help you with the task.Įven this simple script, or ones like it, can be useful. NOTE: If you are in the directory where you created the file, you could also run it like this: chmod +x ~/bin/bash-view. Make the script executable: chmod +x ~/bin/bash-view.Less $JSOBJECTS/Utilities/SetupLinuxBox/.bash_aliases Insert the following text into the file: #! /bin/bash Use a text editor such as geany or nano to create a file called bash-view: geany ~ /bin/bash-view Step Three: A Simple Script (#simple-script) bash_aliases file running in less and call it: BashAliasJsObjects.png. You can also type man less at the Bash prompt to get a rather technical description of this crucial tool.
NOTE: There are many useful descriptions of how to use less on the internet. Use the j and k keys or the arrow keys to navigate through the document. It allows you to see the contents of text files. Now run this command, which uses a built in Linux utility called less: less $JSOBJECTS /Utilities/SetupLinuxBox/.bash_aliases NOTE: _If $JSOBJECTS is not defined, there is probably a problem with your. Call the screenshot: BashAliasListing.png Run both of the commands shown above and create a screenshot that shows the output. In our case, JsObjects is the name of my repository, while JSOBJECTS is an identifier (variable) found in my. Thus JsObjects and JSOBJECTS are entirely different variables. Note that is uses an environment variable called JSOBJECTS: ls $JSOBJECTS /Utilities/SetupLinuxBox/.bash_aliases Here is another, and slightly shorter, way to run the same command. bash_aliases file: ls ~ /Git/JsObjects /Utilities/SetupLinuxBox/.bash_aliases Let's start by running a lengthy command that does not rely on any of the aliases or environment variables found in my. bash_aliases file is set up right, a number of commands should all run without error.
Script spress code#
In particular, you will how to use them to navigate through your clone of the JsObjects repository.Īs you learned in the JsObjects README file, navigation through JsObjects relies upon code found in your. Let's take a few moments to be sure you know a little bit about environment variables. When reviewing the JsObjects README, be sure to read the section on Navigating JsObjects. This assignment assumes that you have installed my collection of sample programs called JsObjects on your system. Understanding how to use them can be a very skill. Bash scripts frequently make use of environment variables. There will also be sections learning how to use aliases and environment variables to customize your environment. Knowing how to run or create even relatively simple scripts can make you significantly more productive.
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