yurenchen000

pkg.go.dev rm pkg

pkg.go.dev 和 proxy.golang.org
简直有毒: 一经它 cache 就不能删除了 (唯一方法是 email 联系人工, 还不一定给删)

何时缓存

只要直接或间接访问一次, 就会被它 cache
例如 go get / go install + 包网址

Recently github has a very cramped TOC size,
Some pages are very difficult to read.

this script (paste and run in browser F12)
help maximize the TOC div size.

//github readme.md toc maximize
with(document.querySelector('readme-toc .SelectMenu-modal.mt-1').style){
 maxHeight=(document.documentElement.clientHeight-40)+'px'

go chan broadcast

chan close to emulate broadcast

if only want signal (without pass value), wait channel close can do the trick:

openwrt opkg install not support specify package version.

ref:
https://stackoverflow.com/a/37938130/4896468
https://forum.openwrt.org/t/opkg-install-a-specific-package-version/33158/21

here is a workgroud to implement install specified version of package with opkg.

principle:

upnp get ext ip

IGD/UPNP get ExternalIPAddress of upper router

A. upnpc cmd

$ upnpc -s | grep ExternalIPAddress
ExternalIPAddress = 192.168.199.121

https://askubuntu.com/a/400273/413480

1. time from `ping -D`

Another possibility to use the ping -D option which gets you the timestamp as Unix time.

tilo@t-ubuntu:~$ ping google.com -D
PING google.com (173.194.33.73) 56(84) bytes of data.
[1388886989.442413] 64 bytes from sea09s15-in-f9.1e100.net (173.194.33.73): icmp_req=1 ttl=57 time=11.1 ms
[1388886990.443845] 64 bytes from sea09s15-in-f9.1e100.net (173.194.33.73): icmp_req=2 ttl=57 time=11.0 ms

show config

git config --global -l

OUT:

	### title bar color
	# edit ~/.config/terminator/config
	# or set in Preferences

	[global_config]
	inactive_color_offset = 0.939102564103
	scroll_tabbar = True
	title_inactive_bg_color = "#555753"
	title_inactive_fg_color = "#888a85"
	title_transmit_bg_color = "#75507b"


	# http*_proxy
	export http_proxy=socks5://proxyAddress:port
	export https_proxy=socks5://proxyAddress:port

	# OR all_proxy
	export all_proxy=socks5://proxyAddress:port

	# ----------------

	#!/usr/bin/awk -f
	# from https://sites.google.com/site/dannychouinard/Home/unix-linux-trinkets/little-utilities/base64-and-base85-encoding-awk-scripts
	#
	# compatible with busybox:
	# no od, awk not print \0

	function encode64() {
	while( "hexdump -e ' \"%07.7_ax \" 16/1 \"%02x \" \"\n\"'" \| getline ) {
	for(c=9; c<=length($0); c++) {
	d=index("0123456789abcdef",substr($0,c,1));