osx + linux wiki

parts:
eth0.md, ftp.md vboxManage.md

GIT source versions system:
git git submodules

.NET:
mono.md libuv-make.cmd

Docker & cloud virtual machines:
docker-wiki, odoo-postgres
vm/gcloud Proxy:
cntlm.md, apache2+webmin.md

Linux introduction, common setup steps:

from scratch:
http://moi.vonos.net/linux/linux-from-scratch/ | http://www.linuxfromscratch.org/

Debian/Ubuntu enable ssh autostart

Script rc.local executes at each runlevel change

1. edit /etc/rc.local file (sudo nano /etc/rc.local)
2. just above last command (exit 0) add a line to start ssh (/etc/init.d/ssh start)

sudo nano /etc/rc.local
sudo echo "/etc/init.d/ssh start" >> /etc/rc.local

sudo /etc/init.d/ssh status

set path, editor

cyberciti.biz/faq/appleosx-bash-unix-change-set-path-environment-variable .bash

# enviroment
env
env | grep DOCKER

echo $PATH
export PATH=
ls -l /etc/paths.d/

set
nano  ~/.bash_profile
export PS1='$(whoami)@$(hostname):$(pwd) $ '
export DISPLAY=:0
# export DOCKER_HOST=tcp://0.0.0.0:2375
unset DOCKER_HOST

# ctrl+E , ctrl+O

ip addr
ip route
less ~/.bash_history

adduser addgroup chown chgrp chmod

https://en.wikipedia.org/?title=Chmod

adduser x staff
chgrp staff x
chmod 664 index.html
chmod 775 ./run
chgrp -R _www wwwroot

-R recursive

cp -R * /var/copy
awk 'NR > 118 && NR <= 120' <file>
awk 'NR > 118 && NR <= 120' /etc/nginx/sites-enabled/default
sudo nano /etc/nginx/sites-enabled/default
sudo nginx -t
sudo service --status-all
sudo service nginx status

linux kernel and distribution version

uname -a
# Darwin Kernel Version 16.3.0: Thu Nov 17 20:23:58 PST 2016; root:xnu-3789.31.2~1/RELEASE_X86_64 x86_64
# (Ubuntu 14.) 3.13.0-52-generic #86-Ubuntu SMP Mon May 4 04:32:59 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

lsb_release -a
# (Debian Ubuntu) Description:	Ubuntu 14.04.5 LTS
# Codename:	trusty

cat /etc/issue
version

Disk Size, mount devices

$ du -hs .
$ df -h

Change time zone

sudo dpkg-reconfigure tzdata

Find files

find /usr -iname "*libGL.so*" -exec ls -l {} \;

Hello world .sh

Save the following into a file called hello.sh:

#!/bin/bash
echo "Hello, World!" 
echo "Knowledge is power."

change mode

chmod +x hello.sh
./hello.sh
# recursive
chgrp -R _www wwwroot

View All System Variables

bash.cyberciti.biz/guide/Main_Page, guide/Variables#Commonly_Used_Shell_Variables

To see all system variables, type the following command at a console / terminal: set OR env:

ps aux | grep root
env | grep DOCKER