Helpful linux commands

 
Let us create a directory
    sudo  mkdir -p /var/www/html/ostechnix1.lan/public_html....<directory name>
        


directories are owned by root user. We need to change the ownership to the regular user.
    sudo chown -R $USER:$USER /var/www/html


set read permissions to the Apache root directory i.e /var/www/html/
    sudo chmod -R 755 /var/www/html/

to open file
    sudo nano <filename with full path>

to generate key for GITHUB-to add your system to bitbucket

    $ ssh-keygen

to collect software
    sudo apt-get install <software_name>
eg
        sudo apt-get install nodejs
sudo apt-update

To set up a framework(eg. laravel, ubuntu)
    $sudo apt-get install npm
    $sudo apt install composer
    curl -sS https://getcomposer.org/installer | sudo php — –install-dir=/usr/local/bin –filename=composer
    sudo apt install curl
    $npm install// to install from packages folder in a project--based on package.json
    $composer install// to install into a project vendor folder--based on composer.json
    $sudo apt-get install nodejs

To convert eml to jpeg (munpack)

 munpack ForwardedMessage7.eml

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check php version
---------------------------------------------------
sudo php -v
sudo composer
sudo mysql -V    

 

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while removing windows from computer
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after deleting the partition
sudo update-grub
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Install PHP

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sudo apt update
sudo apt -y install php7.4
sudo apt install php php-cli php-fpm php-json php-common php-mysql php-zip php-gd php-mbstring php-curl php-xml php-pear php-bcmath

sudo apt-get install -y php7.3-{cli,fpm,json,common,bcmath,bz2,intl,gd,mbstring,zip,curl,xml,pear} 

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TEST

    sudo nano /var/www/html/info.php
WRITE
    <?php
phpinfo();
?>

    http://your_server_ip/info.php

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delete php
------------------------
sudo apt-get purge php7.*
$ sudo apt-get autoclean
$ sudo apt-get autoremove

FIND AND KILL THE RUNNING PROCESS

ps aux | grep -i apt

 

sudo kill <process_id>