Herewith is an example of encoding to and from base64 using OpenSSL's C library. Code presented here is both binary safe, and portable (i.e. it should work on any Posix compliant system e.g. FreeBSD and Linux).
The MIT License (MIT)
Copyright (c) 2013 Barry Steyn
| #!/usr/bin/env python | |
| import random | |
| l=range(1,1+49) | |
| random.shuffle(l) | |
| # extend 5 numbers. (49->54) | |
| l.extend(random.sample(l[0:48],5)) | |
| # display |
| BEGIN:VCALENDAR | |
| PRODID:-//Xinmedia Inc//xinmedia_bike_ical//TW | |
| VERSION:2.0 | |
| METHOD:PUBLISH | |
| TZID:Asia/Taipei | |
| COMMENT:2020-03-1601:26:47 | |
| BEGIN:VEVENT | |
| SUMMARY:2020第11屆順風四馬200K騎福[尚未公布] | |
| DTSTART;VALUE=DATE:20201226 | |
| DTEND;VALUE=DATE:20201227 |
| #!/bin/sh | |
| filename=${0##*/} | |
| usage() | |
| { | |
| cat<<EOF | |
| Usage: | |
| $filename <iface> | |
| EOF |
| Normal: (reponse 204) | |
| $ wget http://connectivitycheck.gstatic.com/generate_204 | |
| --2020-06-17 00:58:49-- http://connectivitycheck.gstatic.com/generate_204 | |
| Resolving connectivitycheck.gstatic.com (connectivitycheck.gstatic.com)... 172.217.24.3, 2404:6800:4008:800::2003 | |
| Connecting to connectivitycheck.gstatic.com (connectivitycheck.gstatic.com)|172.217.24.3|:80... connected. | |
| HTTP request sent, awaiting response... 204 No Content | |
| 2020-06-17 00:58:49 (0.00 B/s) - ‘generate_204.1’ saved [0] | |
| KBRO hijack: (reponse 302 redirect to http://192.168.81.72/redirect/R3_CHC.php) | |
| $ wget http://connectivitycheck.gstatic.com/generate_204 |
| #!/bin/bash | |
| # tailscale completion -*- shell-script -*- | |
| _tailscale() | |
| { | |
| local cur prev words cword | |
| _init_completion -n = || return | |
| if [[ $cword -eq 1 ]]; then | |
| SUBCOMMANDS=$(tailscale --help 2>&1 | awk '/SUBCOMMANDS/{ f = 1; next } /FLAGS/{ f = 0 } f{print $1}') |