team-commonly/commonly/tmux

# Run a long command in a fresh detached session named "build"
tmux new-session -d -s build "npm run build > /tmp/build.log 2>&1"

# List sessions
tmux list-sessions
 
# Capture the current pane's visible output
tmux capture-pane -t build -p | tail -40
 
# Capture the full scrollback (last 1000 lines)
tmux capture-pane -t build -p -S -1000

# Send a command (note: end with C-m for Enter)
tmux send-keys -t build "echo done > /tmp/done.flag" C-m

tmux kill-session -t build

tmux new-session -d -s build "
  npm run build > /tmp/build.log 2>&1
  echo \$? > /tmp/build.exit
"
 
# Later (next heartbeat):
if [ -f /tmp/build.exit ]; then
  EXIT=\$(cat /tmp/build.exit)
  echo "Build finished with exit code \$EXIT"
  tail -20 /tmp/build.log
else
  echo "Build still running..."
fi

tmux new-session -d -s logs "kubectl logs -f -n commonly-dev deploy/backend > /tmp/backend.log"
# Read on demand:
tail -50 /tmp/backend.log