[bash] Run and understand: Run a shell script with read-only permissions

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

git --version

Please install the command that shows “command not found” in the terminal using the following command.

sudo apt install git

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

git clone https://github.com/trygfmi/bash_execute-read-only
cd bash_execute-read-only
cat start_bash_execute-read-only.sh
chmod 400 start_bash_execute-read-only.sh
./start_bash_execute-read-only.sh
bash start_bash_execute-read-only.sh

bash: ./start_bash_execute-read-only.sh: Permission denied
hello bash command world

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 refer to the MacPorts installation instructions at the link below. Also, set an alias for the command so that you can call the command without conflicting with the existing environment. If you are using this blog for the first time, please refer to the following two articles to set up your environment.

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

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

source ~/bashrc_folder/macports_alias
git clone https://github.com/trygfmi/bash_execute-read-only
cd bash_execute-read-only
cat start_bash_execute-read-only.sh
chmod 400 start_bash_execute-read-only.sh
./start_bash_execute-read-only.sh
bash start_bash_execute-read-only.sh

bash: ./start_bash_execute-read-only.sh: Permission denied
hello bash command world

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

WSL2

git --version

MSYS2 MINGW64

Not possible

*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.

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

WSL2

sudo apt install git

MSYS2 MINGW64

Not possible

By executing the following command at the prompt, you should get the following output:

WSL2

git clone https://github.com/trygfmi/bash_execute-read-only
cd bash_execute-read-only
cat start_bash_execute-read-only.sh
chmod 400 start_bash_execute-read-only.sh
./start_bash_execute-read-only.sh
bash start_bash_execute-read-only.sh

bash: ./start_bash_execute-read-only.sh: Permission denied
hello bash command world

MSYS2 MINGW64

Not possible

Not possible