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[source] Run and understand. Loading shellscript within shellscript

created-2025/11/13 updated-2026/03/15

Introduction

This repository runs the source command in a shell script to read variables and run the cat command.

Commands that need to be installed

  1. git

Quickstart

If you have already installed the above command, run the following command to download it from the repository, then change the directory and run the shellscript.

ubuntu

git clone https://github.com/trygfmi/source_shellscript
cd source_shellscript
chmod 744 start_source_shellscript.sh
cat import.sh
cat start_source_shellscript.sh
./start_source_shellscript.sh
Output results
test.txt
hello
hello source command world

macos

MacPorts

source ~/bashrc_folder/macports_alias
git clone https://github.com/trygfmi/source_shellscript
cd source_shellscript
chmod 744 start_source_shellscript.sh
cat import.sh
cat start_source_shellscript.sh
./start_source_shellscript.sh
Output results
test.txt
hello
hello source command world

windows

WSL2

git clone https://github.com/trygfmi/source_shellscript
cd source_shellscript
chmod 744 start_source_shellscript.sh
cat import.sh
cat start_source_shellscript.sh
./start_source_shellscript.sh
Output results
test.txt
hello
hello source command world

MSYS2 MINGW64

git clone https://github.com/trygfmi/source_shellscript
cd source_shellscript
chmod 744 start_source_shellscript.sh
cat import.sh
cat start_source_shellscript.sh
./start_source_shellscript.sh
Output results
test.txt
hello
hello source command world

Procedure

ubuntu

Click to open details

Advance confirmation

Enter the following command into the terminal and if command not found does not appear, it is OK.

git --version

preinstall

If the command not found appears in the terminal, please install it using the following command.

sudo apt install git

command

Executing the following command should output a string similar to the following:

git clone https://github.com/trygfmi/source_shellscript
cd source_shellscript
chmod 744 start_source_shellscript.sh
cat import.sh
cat start_source_shellscript.sh
./start_source_shellscript.sh
detail
test.txt
hello
hello source command world

macos

Click to open details

Advance confirmation

Enter the following command into the terminal and if command not found does not appear, it is OK.

source ~/bashrc_folder/macports_alias
git --version

※MacOS uses the MacPorts package manager to manage commands. If you haven’t installed it yet, please see the MacPorts installation instructions at the link below.

It also allows you to set aliases for commands so that you can call them without conflicting with existing environments.

If you are using this blog for the first time, please refer to the following two articles to set up your environment.

preinstall

If the command not found appears in the terminal, install it using the following command and set an alias.

sudo port install git
echo 'alias git="/opt/local/bin/git"' >> ~/bashrc_folder/macports_alias

COMMAND

Executing the following command should output a string similar to the following:

source ~/bashrc_folder/macports_alias
git clone https://github.com/trygfmi/source_shellscript
cd source_shellscript
chmod 744 start_source_shellscript.sh
cat import.sh
cat start_source_shellscript.sh
./start_source_shellscript.sh
detail
test.txt
hello
hello source command world

windows

Click to open details

Advance confirmation

Enter the following command into the prompt and if command not found does not appear, it’s OK.

WSL2
git --version
MSYS2 MINGW64
git --version

※Windows has been confirmed to work with WSL2 and MSYS2 MINGW64. Please install WSL2 if possible, and if you are unable to set it up, you can run it by installing MSYS2, but there may be some commands that can only be run in WSL2. Please refer to the following article for instructions on how to install WSL2 and MSYS2.

preinstall

If the command not found appears in the prompt, please install it using the following command.

WSL2
sudo apt install git
MSYS2 MINGW64
pacman --sync git

command

Executing the following command should output a string similar to the following:

WSL2
git clone https://github.com/trygfmi/source_shellscript
cd source_shellscript
chmod 744 start_source_shellscript.sh
cat import.sh
cat start_source_shellscript.sh
./start_source_shellscript.sh
detail
test.txt
hello
hello source command world
MSYS2 MINGW64
git clone https://github.com/trygfmi/source_shellscript
cd source_shellscript
chmod 744 start_source_shellscript.sh
cat import.sh
cat start_source_shellscript.sh
./start_source_shellscript.sh
detail
test.txt
hello
hello source command world

Afterword

The source command is executed in the start_source_shellscript.sh file, which reads and displays the file and text variables.
The file variable contains the string filename test.txt, which is then passed as an argument to the cat command to display the file contents.

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