# ionice
# Get or set program I/O scheduling class and priority.
# Scheduling classes: 1 (realtime), 2 (best-effort), 3 (idle).
# Priority levels: 0 (the highest) - 7 (the lowest).
# More information: <https://manned.org/ionice>.
# Set I/O scheduling class of a running process:
ionice -c scheduling_class -p pid
# Run a command with custom I/O scheduling class and priority:
ionice -c scheduling_class -n priority command
# Print the I/O scheduling class and priority of a running process:
ionice -p pid
$
cheat.sh
tldr