simple zsh script

stuffs.zsh

#!/bin/zsh
emulate -L zsh
setopt err_exit

if [[ $# -ne 1 ]]; then
        printf "Usage: %s session_name\n" "$0" >&2
        exit 1
fi

readonly SOCKDIR="/var/run/screen/S-${USER}"
readonly SESSION_NAME="$1"

typeset -a session
session=( "$SOCKDIR"/*."$SESSION_NAME"(pN[1]) )
if ! (( ${#session} )); then
        cd "$HOME"
        screen -dmS "$SESSION_NAME" -s zsh
        echo no session found, starting one
fi