[sed] Run and understand. Add a newline to a target file using the sed command

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

git --version

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

sudo apt install git

By executing the following command, the behavior will be as shown in the details.

git clone https://github.com/trygfmi/sed_newline.git
cd sed_newline
cat hello_ubuntu.txt
sed -i '1i\
' hello_ubuntu.txt
cat hello_ubuntu.txt

hello ubuntu

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.

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

By executing the following command, the behavior will be as shown in the details.

source ~/bashrc_folder/macports_alias
git clone https://github.com/trygfmi/sed_newline.git
cd sed_newline
cat hello_macos.txt
sed -i '' '1i\
\
' hello_macos.txt
cat hello_macos.txt

hello macos

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.

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

By executing the following command, the behavior will be as shown in the details.

WSL2

git clone https://github.com/trygfmi/sed_newline.git
cd sed_newline
cat hello_windows.txt
sed -i '1i\
' hello_windows.txt
cat hello_windows.txt

hello windows

MSYS2 MINGW64

git clone https://github.com/trygfmi/sed_newline.git
cd sed_newline
cat hello_windows.txt
sed -i '1i\
' hello_windows.txt
cat hello_windows.txt

hello windows