https://github.com/niinpatel/basic-shell-scripting

If statements, While loops, Switch Case, Random Numbers and More using shell scripting.
https://github.com/niinpatel/basic-shell-scripting

bash scripting shell unix

Last synced: 4 months ago
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If statements, While loops, Switch Case, Random Numbers and More using shell scripting.

• Host: GitHub
• URL: https://github.com/niinpatel/basic-shell-scripting
• Owner: niinpatel
• Created: 2018-06-07T16:22:26.000Z (about 8 years ago)
• Default Branch: master
• Last Pushed: 2020-11-01T17:48:23.000Z (over 5 years ago)
• Last Synced: 2024-10-24T02:31:35.323Z (over 1 year ago)
• Topics: bash, scripting, shell, unix
• Language: Shell
• Homepage:
• Size: 2.93 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Funding: .github/FUNDING.yml

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README

          
# basic-shell-scripting

> /* About [SL Package](https://github.com/mtoyoda/sl)

>    This package creates a steam locomotive animation on the terminal whenever you enter commands like sl or LS or any other misspelling or ls command. 

     (Works only for Linux).

*/ 

This program runs different steam locomotives continuously on your terminal.

![alt demo](https://i.imgur.com/2OG2r80.gif)

__Use of :__ 

* [if then statements](https://www.tutorialspoint.com/unix/if-elif-statement.htm) 

* [dpkg commands](https://linuxconfig.org/how-to-test-for-installed-package-using-shell-script-on-ubuntu-and-debian) 

* [while loop](https://www.tutorialspoint.com/unix/while-loop.htm) 

* [switch esac](https://www.tutorialspoint.com/unix/case-esac-statement.htm)

* [variable declaration](https://www.tutorialspoint.com/unix/unix-using-variables.htm)

* [random numbers generation.](https://blog.eduonix.com/shell-scripting/generating-random-numbers-in-linux-shell-scripting/) 

__What it does.__ 

This is the basic shell scripting program which contains basic programming commands like *if statements*, *while loop*, *switch case* and more. 

Here's the brief explanation of what is happening. 

to run this script correctly, user needs to have [sl](https://github.com/mtoyoda/sl) installed in his computer, so the first thing this program does is to check if *sl* is installed or not. 

we do this using an *if* then statement and a *dkpg* query. If the package is not there, it will install the package in automatically. 

Next, if creates a *while loop* which runs forever. this can be achieved using while true; command. 

inside the while loop, i will declare and initialize a variable called *train_number* and assign it a random number between 1 and 3. 

Then I will use a *switch* statement. We will call a random train based on the number that is in the *train_number* variable. 

finally we close the switch statement and while loop with *esac* and *done* respectively. 

To run the script, clone into the repo and then type the following command on the terminal: 

    ./simplebash.sh

    

    

This should start the script. To end it, you can just close the terminal.