bash script global

Context

Sometimes, you want to create a custom bash script and be able to run it from any location in the terminal just like a regular command

To do this, you can place your script in a directory that is part of the system's $PATH. One command and safe choice is /usr/local/bin

What Is $PATH?

It is an environment variable that tells the shells where to look for executables (like programs, tools, and scripts) when you run a command

echo $PATH
---
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

Each path is separated by a :. When you run a command (like getDatabaseName.sh), the shell checks each of these directories in order until it finds a match

By placing your script in /usr/local/bin/, which is already in $PATH, your script becomes globally accessible

Solution

Step 1: Create the Script

Navigate to /usr/local/bin/

cd /usr/local/bin
sudo vim getDataBaseName.sh

Paste this sample script

#!/bin/bash

echo "Database name is Andy"

Make the script executable

sudo chmod +x ./getDatabaseName.sh

Step 2: Run the Script From Anywhere

Now, you can run script from any folder and it will work

getDatabaseName.sh