Update docker-compose

$ sudo apt-get remove docker-compose

$ sudo curl -L "https://github.com/docker/compose/releases/download/v2.13.0/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

$ sudo chmod +x /usr/local/bin/docker-compose

$ sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose

Caching your GitHub credentials in Git

git config --global credential.helper 'cache --timeout=10000000' ;16 week

git config --global credential.helper 'cache --timeout=604800' ;7 days

1 day 86400 second

7 day 604800 second

30 day 2592000 second

Install Linux Alpine on VMware

 # Install Linux Alpine template:

- setup-alpine

- keyboard us,us

- disk install lvm

- type install sys

reboot

# setup hostname and ip address:

edit file /etc/network/interface

auto eth0

iface eth0 inet static

        address 192.168.2.16

        netmask 255.255.255.0

        gateway 192.168.2.254

        hostname YOUR-HOSTNAME

echo "YOUR-HOSTNAME" > /etc/hostname

hostname -F /etc/hostname

# Set dns:

edit file /etc/resolv.conf

nameserver 8.8.8.8

nameserver 4.4.4.4

reboot

# add repositories /etc/apk/repositories:

edit /etc/apk/repositories

http://dl-cdn.alpinelinux.org/alpine/latest-stable/community/

apk update 

apk upgrade

# create user admin:

adduser admin

# install docker:

apk add docker

apk add docker-compose

# add user admin to docker group:

addgroup admin docker

# start docker on boot:

rc-update add docker boot

service docker start

# install net-snmp:

apk add net-snmp

edit /etc/snmp/snmpd/conf

agentAddress  udp:0.0.0.0:161

rocommunity SNMP_SECRET_KEY  default

# start snmp on boot:

rc-update add snmpd boot

service snmpd start

# install open-vm-tools:

apk add open-vm-tools

# start open-vm-tools on boot:

rc-update add open-vm-tools boot

service open-vm-tools start

# install git:

apk add git

# install vim:

apk add vim

edit /home/${USER}/.vimrc

set tabstop=2

set shiftwidth=2

set softtabstop=2

set expandtab

set visualbell

edit /home/${USER}/.inputrc

set bell-style none #disable bell 

# test snmp services:

snmpwalk -c SNMP_SECRET_KEY -v2c YOUR_SERVER_IPADDRESS

envsubst example

#export TEST=123456

#vim test.txt

test=${TEST}

#envsubst < test.txt

test=123456

#envsubst < test.txt > file.txt

#more file.txt

test=123456

How to set per-filetype tab size in vscode

edit settings.json

{

    "[sass]": {

        "editor.tabSize": 2

    },

    "[html]": {

        "editor.tabSize": 4

    },

    "[javascript]": {

        "editor.tabSize": 2

    },

    "[python]": {

        "editor.tabSize": 4

    },

    "[yml]": {

        "editor.tabSize": 2

    },

}