Creating the Script

Step 1: Create a simple ruby script or you can use any ruby script of your choice that you want to run within the tmux session.

• ruby_script.rb

greetings = "Hello Geeks"
puts greetings

Step 2: Use the following line to create a new Tmux session.

#creates new session
tmux new-session -d -s my_ruby_session

• tmux new-session: This command is used for creating a new Tmux session.
• -d: This option tells Tmux to create the new session in detached mode.
• -s my_ruby_session: Specifies the name of the new Tmux session, in this case, “my_ruby_session.”

Step 3: Configure the tmux multiplexer to send keyboard strokes to the tmux sessions.

# Creates the session for the running ruby script
tmux send-keys -t my_ruby_session "ruby ruby_script.rb" C-m

• tmux send-keys: This is the Tmux command for sending keystrokes to a Tmux session.
• -t my_ruby_session: This specifies the target session or window where you want to send the keystrokes. Here we are targeting the “my_ruby_session”.
• ruby ruby_script.rb: This is the actual string of keystrokes that you want to send. In this case, it’s the command ruby ruby_script.rb, which appears to be a Ruby script named “ruby_script.rb” that you want to execute within the Tmux session.
• C-m: This represents a control character, specifically “Control-M,” which is equivalent to the Enter key.

Step 4: The tmux attach-session command is used in the Tmux terminal multiplexer to attach to an existing Tmux session.

# Attaches to session
tmux attach-session -t my_ruby_session

• tmux attach-session: This is the base command for attaching to an existing Tmux session.
• -t my_ruby_session: This option specifies the target session you want to attach to.

Scripts are important for streamlining workflows and automating tasks. One such way to streamline workflow is by using Tmux [Terminal Multiplexer]. When used along with shell scripts we will be able to automatically commence a Tmux session and perform certain tasks. In this article, we shall see how to use a shell script that will automatically start a tmux session and then run a ruby script.