Summertime

Custom instructions

I'm Australian

User

give me some bash boilerplate that:

• checks bashes version and refuses to run if its older than current
• sets up all safe and desirable shopts: globbing and lastpipe, not nullglob or whatever
• Sets up boot, machine, and invocation id from systemd's id stuff
• sets up variables for all the XDG dirs
• sets up an array called "TRAP_EXIT" that will run on the exit trap

Summertime

#!/usr/bin/env python
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('-n', '--count', metavar='TIMES', default=None, type=int)
parser.add_argument('-e', '--every', metavar='SECONDS', default=5, type=float)
parser.add_argument('-o', '--stdout', action='store_true')
parser.add_argument('-H', '--header', dest='headers', metavar=('KEY', 'VALUE'), action='append', default=[], nargs=2)
parser.add_argument('-t', '--template', default='%Y-%m-%dT%H:%M:%S.%f%:z')
parser.add_argument('--timeout', metavar='SECONDS', default=60, type=float)
parser.add_argument('url')

Summertime

class TimeoutMixin:
    def send(self, *args, **kwargs):
        if hasattr(self, 'timeout') and 'timeout' not in kwargs:
            kwargs['timeout'] = self.timeout
        return super().send(*args, **kwargs)

# Use
import requests

class Session(TimeoutMixin, requests.Session):

Summertime

#!/usr/bin/env python
import os
import ctypes
from ctypes import CDLL
import sys
import random
import string
from errno import EEXIST
# C stuff
libc = CDLL('libc.so.6', use_errno=True)

Summertime

#!/usr/bin/env python
from functools import wraps

class Interpolation:
    def __init__(self, getvalue):
        self.getvalue = getvalue

def eager_tag(func):
    @wraps(func)
    def wrapper(*args):

Summertime

#!/usr/bin/env python
# Novel code (of which there is almost none) is under The Unlicense
# the C# runtime code this file copies from is
#   https://github.com/dotnet/runtime/blob/5535e31a712343a63f5d7d796cd874e563e5ac14/LICENSE.TXT
# The decompiled C# code this file copies parts from is owned by https://x.com/eggHatcherGame
#   And is unfortunately used here without permission.

import json
import sys
import io

Summertime

Netpbm

Netpbm format

• PNM - Portable Any Map
  • PBM - Portable Bit Map
  • PGM - Portable Gray Map
  • PPM - Portable Pixel Map
• PAM - Portable Arbitrary Map

Summertime

Bash Book

Summertime

#!/usr/bin/env bash

p () {
	declare USAGE="${FUNCNAME[0]} [-h] [-0] [--] [ARGS ...]"
	declare NL='\n'
	declare -i OPTIND=1
	while getopts h0 OPT; do
		case "$OPT" in
			'h')printf 'Usage: %s\n' "$USAGE";return;;
			'?')printf 'Usage: %s\n' "$USAGE">&2;return 1;;

Summertime

APPNAME=exchange.sh

p () { printf '%s\n' "$@";}

: "${XDG_CACHE_HOME:=$HOME/.cache}"
cachedget () {
	URL=$1
	CACHEDIR="$XDG_CACHE_HOME/$APPNAME/curl/GET-$(base64 -w0 <<< "$URL")"
	mkdir --parents "$CACHEDIR"
	curl -sS \