andyxning

#!/bin/bash

# Under instructions in: https://blog.kapeli.com/linux-man-pages-in-dash

set -x
set -e

man_path_dest_dir="/usr/local/share/man"
man_pages_version="5.06"
linux_man_pages_download_link="https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/man-pages-${man_pages_version}.tar.xz"

andyxning

#!/usr/bin/env python
# -*- coding:utf-8 -*-
#
# Note: This may only work in CPython. For more info please see python doc about sys._getframe

import sys


# This will also show that function name(co_name) in python is bounded to function code(f_code).
# i.e., function assignment will not change the attribute of "co_name", function name

andyxning

{
	"logPath": "/var/log/kern.log",
	"lookback": "10m",
	"startPattern": "Initializing cgroup subsys cpuset",
	"bufferSize": 10,
	"source": "npd",
	"conditions": [
		{
			"type": "KernelDeadlock",
			"reason": "KernelHasNoDeadlock",

andyxning

pod (vv10dece4d-9avwu) failed to fit in any node fit failure on node (192.168.0.1): Insufficient CPU fit failure on node (192.168.0.2): Insufficient Memory fit failure on node (192.168.0.3): Insufficient Memory fit failure on node (192.168.0.4): Insufficient CPU fit failure on node (192.168.0.5): Insufficient CPU fit failure on node (192.168.0.6): Insufficient CPU fit failure on node (192.168.0.7): Insufficient CPU fit failure on node (192.168.0.8): Insufficient CPU fit failure on node (192.168.0.9): Insufficient CPU fit failure on node (192.168.0.10): Insufficient CPU fit failure on node (192.168.0.11): Insufficient CPU fit failure on node (192.168.0.12): Insufficient CPU fit failure on node (192.168.0.13): Insufficient CPU fit failure on node (192.168.0.14): Insufficient CPU fit failure on node (192.168.0.15): Insufficient Memory fit failure on node (192.168.0.16): Insufficient Memory fit failure on node (192.168.0.17): Insufficient CPU fit failure on node (192.168.0.18): Insufficient CPU fit failure on

andyxning

Tags

• update tags
  • git fetch <remote> 'refs/tags/*:refs/tags/*'

andyxning

type JsonSpecial float64

func (value JsonSpecial) MarshalJSON() ([]byte, error) {
	// Handle NaN, Inf and near-zero values marshalling
	if math.IsNaN(float64(value)) || math.IsInf(fload64(value), 0) {
		return json.Marshal(nil)
	} else if math.Exp(float64(value)) == 1 {
		return json.Marshal(0)
	}

andyxning

package main

import "fmt"
import "net"

func main() {
	IPv4Loopback := net.ParseIP("127.0.0.1")
	IPv6Loopback := net.ParseIP("::1")
	NonIPv6LoopbackOne := net.ParseIP("2001:db8::1")
	NonIPv6LoopbackTwo := net.ParseIP("fe80::1%lo0")

andyxning

#/usr/bin/env python
# -*- coding: utf-8 -*-

a = {3:4, 1:2, 5:6}

# Demo1
#
# get a list of tuples consisting the dict,
# sort the list with tuple items
print sorted(a.items())

andyxning

# [reference 1](http://www.unix.com/302702781-post2.html)
# awesome in using Ternary Operator
awk '
    BEGIN {
        a["1"]="a";
        a["2"]="b";
        a["3"]="c";
    }
    { print !( $1 in a) ? "x" : a[$1]; }
'

andyxning

single quote using in awk
###### Using Single QUote in awk script
 
     function ltrim_single_quote(s) { return sub(/^\047+/, "", s); return s}                                                                                                                                    
     function rtrim_single_quote(s) { return sub(/'\047+$/, "", s); return s}                                                                                                                                   
     function trim_single_quote(s) { return ltrim_single_quote(rtrim_single_quote(s)) } 

* [reference 1](http://www.gnu.org/software/gawk/manual/html_node/Quoting.html)