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|
#!/bin/sh
set -eu
usage() {
cat <<-'EOF'
Usage:
nicely COMMAND...
nicely -h
EOF
}
help() {
cat <<-'EOF'
Options:
-h, --help show this message
COMMAND the command to be wrapped
Wrap COMMAND in nice(1) and ionice(1) calls, so that it gets low
priority from the OS scheduler and has low disturbance regarding
CPU usage and disk IO bandwidth.
Examples:
Make the backup low priority:
$ nicely backup
EOF
}
for flag in "$@"; do
case "$flag" in
(--)
break
;;
(--help)
usage
help
exit
;;
(*)
;;
esac
done
while getopts 'h' flag; do
case "$flag" in
(h)
usage
help
exit
;;
(*)
usage >&2
exit 2
;;
esac
done
shift $((OPTIND - 1))
ionice -c3 nice -n19 "$@"
|
