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2019

  • in Python-3
  • 1 min read

python3-merry-christmas

Python 3 prints Merry Christmas Everyone!

Merry Christmas with Python3 script

var="Merry Christmas Everyone!"

print (var)

pip3-list-installed-upgrade-all

So, I want to list the packages installed with pip3 and now that I can see them, I want to update them all.

List pip3 installed packages

pip3 list

Update all my pip3 packages

with a for loop you can loop through all your packages, exclude what is not a package and run the command pip3 {package} --upgrade on the installed packages.

for n in $(pip3 list | awk '{print $1}' | egrep -v 'Package|^-'); do
    pip3 install --upgrade ${n} ;
done

pip update outdates packages

Just another way of doing it.

for package in $(pip list -o | cut -f 1 -d ' ' | tail -n +3); do pip install --upgrade ${package}; done

If you know a better way, do let me know! :)

Beware of dependencies packages or minimum and max versions.

Use at your own responsibility.

Happy learning,

Antonio Feijao

github-basics-command

Github git basic commands

Some basic git command and working with ssh keys to update the repository

https://help.github.com/en/enterprise/2.17/user/authenticating-to-github/adding-a-new-ssh-key-to-your-github-account

git clone


ssh-keygen -t rsa -b 4096 -C "my comment "

vim ~/.ssh/config

eval "$(ssh-agent -s)"

ssh-add "my-private-key..."


git remote set-url origin [email protected]:"USERNAME"/"REPOSITORI.git"


git status

git add .

git commit -am "message/comment about changes"

git push

git pull

git with ssh key

  1. first create your ssh key ssh-keygen -b 4096
  2. add the .pub key into your repository
  3. check this setup - https://medium.com/@czarpino/how-to-tell-git-which-ssh-key-to-use-c8574fb243fd

Good documentation about git commands

raspberry-pi-as-a-router-nat

Transform to run as a router and NAT device

Finally! This project is now documented here - https://antonio.cloud/projects/linux/raspberry-pi/raspberry-pi-router-access-point-dns-block-ads-vpn/

Important

Below are notes from my old post

## the command below required sudo

echo "-----------------------"
echo "Shows the configs before changes..."

sysctl net.ipv4.ip_forward net.ipv4.conf.eth0.send_redirects

iptables -n -t nat -L POSTROUTING 


echo "-----------------------"
echo "Enabling IPv4 routing packets forward..."

sysctl -q -w net.ipv4.ip_forward=1 net.ipv4.conf.eth0.send_redirects=0


echo "-----------------------"
echo "Enabling routing/PAT with ip tables..."

iptables -t nat -C POSTROUTING -o eth0 -j MASQUERADE 2> /dev/null || iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE


echo "-----------------------" 
echo "Show configs after changes..."
sysctl net.ipv4.ip_forward net.ipv4.conf.eth0.send_redirects
iptables -n -t nat -L POSTROUTING 


echo "-----------------------"
echo "Routing/NAT configuration completed "

python-3-http-server

A quick and simple way to start a webserver on the current directory with Python 3 using module http.server

{% highlight bash linenos %}

python3 -m http.server 8000 --directory .`

{% endhighlight %}

Happy learning and keep practicing!

Antonio.Cloud

  • in linux
  • 1 min read

linux-find-command

Linux find command

Warning

Use the flag -exec with care. Try the command find without the -exec rm {} \; to see which files are found,

find . -type f -name 'desktop.ini' -exec rm {} \;

find . -type f -name '.DS_Store' -exec rm {} \;

clamav-linux-free-antivuris-scan

Linux Clam AntiVirus ClamAV

ClamAV

  • clamav's logo

  • Runs on AmazonLinux, Linux RedHat, Ubuntu, MacOS, Raspberry Pi, ...

ClamAV is an open source antivirus engine for detecting trojans, viruses, malware & other malicious threats.

Basic installation ClamAV Linux open source antivirus

MacOS - brew install clamav

RaspberryPi Ubuntu - apt-get install clamav

AmazonLinux, RedHat, CentOS, Fedora - yum install clamav

Using ClamAV freshclam and clamscn

## updates anti-virus database engine

freshclam -v


## executes the scan-antivirus, -->> ATTENTION to the `--remove` flag, this deletes files!
##
# consider running the command first without the `--remove` flag.

sudo clamscan --infected --remove --recursive=yes .

brief explanation

  • sudo - run the command as superuser or root
  • clamscan - runs the ClamAV scanner
  • -v - run in verbose mode
  • --infected - only output infected files (unless you also specified the verbose)
  • --remove - removes (deletes) infected detected files

offical manual command man freshclam man clamscan

use man freshclam or man clamscan for the official command line manual.

  • in linux, Coding
  • 2 min read

vim and vimrc file options

vimrc file options

vimrc file options

  • Remember, if you are using a colorscheme, you need to download that scheme. Example, check the link for the happy_hacking

  • If you use this .vimrc suggestion file, it enables vim visual mode, so mouse support is enable on vim.

  • Basic commands in visual mode are :

    • shift+y to copy
    • shift+p to paste

  • Below, suggestion for file .vimrc ...

""" read first from this file
""" from " Website: https://github.com/yorickpeterse/happy_hacking.vim
"colorscheme happy_hacking
colorscheme yozakura

""" then apply personalisations
filetype off

"highlight clear

filetype plugin indent on " Filetype auto-detection
syntax on " Syntax highlighting

"set background=dark


""" set UTF-8 encoding
set encoding=utf-8
set fenc=utf-8
set termencoding=utf-8
""" disable vi compatibility (emulation of old bugs)
set nocompatible
""" use indentation of previous line
set autoindent
""" use intelligent indentation for C
"set smartindent
""" configure tabwidth and insert spaces instead of tabs
set tabstop=4        " tab width is 4 spaces
set shiftwidth=4     " indent also with 4 spaces
set expandtab        " expand tabs to spaces
""" wrap lines at 120 chars. 80 is somewaht antiquated with nowadays displays.
set textwidth=120
""" turn syntax highlighting on
set t_Co=256
"syntax on
""" colorscheme wombat256
""" turn line numbers on
set number
""" highlight matching braces
set showmatch
""" intelligent comments

set softtabstop=4
set showcmd
set showmatch
set incsearch
set hlsearch

set hidden

"if has('termguicolors')
"    set termguicolors
"endif

set mouse=a

""" https://gist.github.com/benjiao/08432d1377e768c2c4e9

" Use case insesitive search
set ignorecase
set smartcase

" Display cursor position
set ruler

" Prompt to save file on exit
set confirm

" Disable beep
set visualbell

" Highlight cursor line
set cursorline