watch — monitor any command output on a repeating interval

linux-watch.sh

# watch — repeat a command every N seconds with a live-updating view

# Basic: refresh every 2 seconds
watch -n2 <command>

# Highlight what changed since last refresh
watch -n1 -d ls -lh outputs/

# Monitor GPU memory during inference
watch -n1 nvidia-smi --query-gpu=memory.used,memory.free --format=csv

# Monitor a queue draining
watch -n1 'ls queue/ | wc -l; echo "---"; ls queue/'

# Machine-readable output (no TUI chrome)
watch --no-title -n1 date | tee timestamps.log

# Replace ad-hoc while loops:
# while true; do cmd; sleep N; done   →   watch -n N cmd