Create named tmux sessions that starts in certain directories

tmux_sessions.sh

#!/usr/bin/env bash
## given the following starting point
# tree -L 1
# .
# ├── foo
# ├── bar
# └── tmux_sessions.sh
# 2 directories, 1 files
## create this state, where each sessions 'root' is in the respective directories
# tmux ls
# foo: 1 windows (created Thu Aug  6 07:07:02 2026)
# bar: 1 windows (created Thu Aug  6 07:04:07 2026)

SESSIONNAMES=(
    "foo"
    "bar"
)

for SESSIONNAME in "${SESSIONNAMES[@]}"; do
    SESSIONDIR="$(pwd)/$SESSIONNAME"

    # tmux has-session does not support exact match to use grep instead
    if tmux list-sessions -F '#{session_name}' | grep -Fx "$SESSIONNAME"; then
      echo "exists"
    else
       tmux new-session \
           -s "$SESSIONNAME" \
           -n script \
           -c "$SESSIONDIR" \
           -d
    fi
done