nileshsimaria

package main

import (
	"flag"
	"fmt"
)

// MyList is string slice
type MyList []string

nileshsimaria

package main

import (
	"flag"
	"fmt"
)

var (
	file   = flag.String("file", "", "file-name")
	count  = flag.Int("count", 2, "count params")

nileshsimaria

package main

import (
	"flag"
	"fmt"
)

var (
	file   = flag.String("file", "", "file-name")
	count  = flag.Int("count", 2, "count params")

nileshsimaria

package main

import (
	"fmt"
	"os"
)

func main() {
	fmt.Println("len", len(os.Args))

nileshsimaria

package main

import "fmt"

func main() {
	a := []int{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
	b := make([]*int, 10)

	for i, v := range a {
		b[i] = &v

nileshsimaria

Be careful if you are adding user to docker group.

1. As a root, create a file (owner root and group root)
 
$ touch /etc/foo
$ ls -l /etc/foo
-rw-r--r-- 1 root root 0 Dec  5 17:40 /etc/foo
 
2. Login as a non-root user belongs to docker group. In my example its user u1.
$ id

nileshsimaria

Modify /etc/ssh/sshd_config

ClientAliveInterval 120
ClientAliveCountMax 720

This will not kick you off even if you are inactive for 24 hours. After that it will kick you out.

$ sudo service ssh reload

nileshsimaria

1. Take a backup of docker.service file.
   $ cp /lib/systemd/system/docker.service /lib/systemd/system/docker.service.orig

2. Modify /lib/systemd/system/docker.service to tell docker to use our own directory 
   instead of default /var/lib/docker. In this example, I am using /p/var/lib/docker
   
   Apply below patch.

   $ diff -uP -N /lib/systemd/system/docker.service.orig /lib/systemd/system/docker.service
   --- /lib/systemd/system/docker.service.orig	2018-12-05 21:24:20.544852391 -0800

nileshsimaria

I am on Ubuntu 16.04.5 LTS.

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 16.04.5 LTS
Release:        16.04
Codename:       xenial

I wanted to install latest protoc (which at the time of writing this is version 3.6.1).

nileshsimaria

package main

import (
	"fmt"
	"time"
)

const BufferedChLen = 1024

func consumer() chan<- int {