Example of tmux script

start_session.sh

#!/bin/bash

SESSION_NAME=my_session

# following commands will be executed first, in each window
pre_input="echo this will run in every window before as a first command"

# define commands
# 'name' 'command'
input=(
  'Window1' "vim
"
  'Some other window' "ls -lah"
)

if [ -z ${TMUX} ];
then
  TMUX= tmux new-session -s $SESSION_NAME -d
  echo "Starting new session."
else
  SESSION_NAME="$(tmux display-message -p '#S')"
fi

# create arrays of names and commands
for ((i=0; i < ${#input[*]}; i++));
do
  ((i%2==0)) && names[$i/2]="${input[$i]}" 
	((i%2==1)) && cmds[$i/2]="${input[$i]}"
done

# run tmux windows
for ((i=0; i < ${#names[*]}; i++));
do
	tmux new-window -t $SESSION_NAME:$(($i+10)) -n "${names[$i]}"
done

sleep 4

# send commands
for ((i=0; i < ${#cmds[*]}; i++));
do
	tmux send-keys -t $SESSION_NAME:$(($i+10)) "${pre_input};
${cmds[$i]}"
done

sleep 4

tmux select-window -t $SESSION_NAME:0
tmux -2 attach-session -t $SESSION_NAME

clear