21 lines
513 B
Text
21 lines
513 B
Text
|
#!/usr/bin/env bash
|
||
|
|
|
||
|
|
usage() {
|
||
|
|
echo "at - waits until after the specified datetime"
|
||
|
|
echo "Usage:"
|
||
|
|
echo " at <DATETIME> && command..."
|
||
|
|
echo
|
||
|
|
echo "Examples:"
|
||
|
|
echo " at 15:00:00 && echo \"it is 3 o'clock\""
|
||
|
|
}
|
||
|
|
|
||
|
|
[[ -z "$1" ]] && { echo "Error: No DATE argument provided." >&2; usage; exit 1; }
|
||
|
|
|
||
|
|
d="$(date -d "${@}" +%s)"
|
||
|
|
while [[ "$d" -ge "$(date +%s)" ]]; do
|
||
|
|
_dt=$((d - $(date +%s)))
|
||
|
|
days=$((_dt / 86400))
|
||
|
|
echo -ne "\rTime Remaining: ${days}d $(date -u --date @$((_dt)) +%H:%M:%S) ";
|
||
|
|
sleep 0.1
|
||
|
|
done
|
||
|
|
exit 0
|