install

#!/usr/bin/bash

usage="Usage: $(basename "$0") [-h | --help]

The executable located at ./src/tmux-session will be installed by copying 
it to /usr/local/bin/tmux-session.

Options:
    -h, --help  Show this help text."

directory=/usr/local/bin
this_dir=$(dirname $(realpath ${BASH_SOURCE:-$0}))

if [[ $1 == "-h" || $1 == "--help" ]]; then
    echo "$usage"
    exit 0
fi

if [[ $# -gt 1 ]]; then
    echo "$usage"
    exit 1
fi

if [[ ! -d $directory ]]; then
    echo "Directory $directory does not exist. Install tmux-session manually by
placing the executable located at ./src/tmux-session in a directory that is
in your PATH."
    exit 1
fi

echo "Installing tmux-session at $directory/tmux-session"
cp -r "$this_dir/src/tmux-session" "$directory/tmux-session"
echo "Installation done."