Automate life

defer

#!/usr/bin/env python
"""
sleep the specified amount of time

accepts seconds, minutes, hours, days, and years like so:

  10 seconds: 10s
  15 minutes: 15m
  4 hours:    4h
  90 days:    90d
  1 year:     1y

If you need to subdivide you just have to drop to the next smaller unit.

1d6h is WRONG -- 30h is correct


RANGES

you can as it to sleep randomly between 2h and 4h like so:

    defer 2h-4h

the smaller number must be first
"""
import time
import sys
import random

def defer(i, fn=None):
    duration = parse_input(i)
    time.sleep(duration)
    if fn is not None: return fn()
    
def parse_input(i):
    if "-" not in i:
        return parse_duration(i)
    
    min, max = i.split("-")
    min, max = parse_duration(min), parse_duration(max)
    
    return random.randint(min, max)

def parse_duration(d):
    unit = "s"
    if d[-1].isalpha():
        unit = d[-1]
        d = d[:-1]
    d = int(d)
    return to_sec(unit, d)
    
def to_sec(unit, duration):
    s = lambda x: x
    m = lambda x: 60 * s(x)
    h = lambda x: 60 * m(x)
    d = lambda x: 24 * h(x)
    y = lambda x: 365 * d(x)
    
    to_seconds = locals()[unit]
    return to_seconds(duration)
    
if __name__ == "__main__":
    defer(sys.argv[1])

repeatevery

#!/bin/bash
#
# Uses defer.
#
# example:
#     repeatevery 1h echo "hi mom"
#
# will call `echo "hi mom"` every hour
#
# example 2:
#
#     repeatever 2h-6h echo "boo!"
#
# will call `echo "boo!"` every 2 to 6 hours (randomly chosen)


function on_quit () {
    kill -2 %1
    exit
}
trap "on_quit" SIGQUIT TERM INT

while true ; do
    ${*:2}
    defer $1
done