mirror of
https://github.com/notwa/rc
synced 2024-11-05 04:29:03 -08:00
40 lines
1 KiB
Bash
Executable file
40 lines
1 KiB
Bash
Executable file
#!/usr/bin/env dash
|
|
# YES_ZSH
|
|
# YES_BASH
|
|
# YES_DASH
|
|
|
|
minutemaid() { ### @-
|
|
### return 0 if the current minute is divisible by a number.
|
|
### note that a minute is relative to the seconds since the epoch, not the minute of the hour.
|
|
###
|
|
### ```
|
|
### # crontab usage:
|
|
### * * * * * minutemaid 9 ~/work/do_my_bidding # runs every nine minutes
|
|
### ```
|
|
|
|
local offset=0 name
|
|
while getopts 'o:h' name; do
|
|
case $name in
|
|
o) offset="$OPTARG";;
|
|
?) local fd=0
|
|
[ $name = h ] && fd=1 || fd=2
|
|
printf "%s\n" "usage: $0 [-o offset] {interval} [{command} [{args...}]]" >&$fd
|
|
[ $name = h ] && return 0 || return 1;;
|
|
esac
|
|
done
|
|
shift $((OPTIND-1))
|
|
|
|
local interval="${1:?no interval specified}"
|
|
shift
|
|
|
|
local sec="$(date +%s)"
|
|
local min="$((sec/60+offset))"
|
|
local mod="$((min%interval))"
|
|
if [ $# -gt 0 ]; then
|
|
[ $mod -ne 0 ] || "$@"
|
|
else
|
|
[ $mod -eq 0 ] && return 0 || return 1
|
|
fi
|
|
}
|
|
|
|
[ "${SOURCING:-0}" -gt 0 ] || minutemaid "$@"
|