-------------------------------------------------------------CLEAN SYSTEM----------------------------------------------------------------------

sudo du -sh /var/cache/apt

sudo journalctl --disk-usage

sudo journalctl --vacuum-time=2d

sudo journalctl --vacuum-time=3d

sudo apt-get autoremove

sudo apt autoremove

sudo du -sh /var/cache/apt 

du -h /var/lib/snapd/snaps

du -sh ~/.cache/thumbnails

sudo rm -rf ~/.cache/thumbnails/*

sudo apt-get clean

sudo apt-get autoclean

sudo apt-get update

sudo apt update

sudo apt-get upgrade

sudo apt upgrade

sudo apt list --installed

sudo apt remove ----

snap list

sudo snap remove ----


sudo su

sudo passwd prakash

--------------------------------------------------------------------------------------------------------------------------------------------


-----------------------------------------------------------RSYNC File-----------------------------------------------------------------------

sudo apt-get install sshpass

sudo apt-get install ssh

sudo service ssh status

sudo service ssh start

sudo ssh-keygen -f "/root/.ssh/known_hosts" -R "192.168.0.37"

sudo rsync -avz --progress index.html prakash@192.168.0.200:    ===home/prakash

sudo rsync -avz --progress index.html prakash@192.168.0.200:Desktop/ ===home/prakash/Desktop

// server to local file arsync
rsync -avz --progress username@192.168.0.111:/usr/yourFileName ./ 

 // local to server file arsync

rsync -avz --progress -e "ssh -p 6002" filename username@208.109.234.82: 

---------------------------------------------------------------------------------------------------------------------------------------------


-----------------------------------------------------------NODE INSTALL----------------------------------------------------------------------

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/master/install.sh | bash

source ~/.bashrc

nvm --version

nvm list-remote

nvm install v14.0.0

nvm use 14.0.0

sudo nvm ls-remote

sudo service kiosk restart
sudo apt install ffmpeg
sudo apt install sshpass

 

sudo chmod 777 /dev/usb/lp*
sudo chmod 777 /dev/ttyS*
sudo chmod 777 /dev/ttyS5
sudo chmod 777 /dev/ttyUSB
sudo chmod 777 /dev/lp*
sudo vim /etc/crontab 

--------------------------------------------------------------------------------------------------------------------------------------------


---------------------------------------------------------REMOVE MYSQL-----------------------------------------------------------------------

sudo apt-get remove --purge mysql-server mysql-client mysql-common

sudo apt-get remove mysql-community-client-core

sudo apt-get remove mysql-community-server-core

sudo apt-get remove mysql-community-server-core

sudo apt-get autoclean

sudo rm -rf /var/lib/mysql

--------------------------------------------------------------------------------------------------------------------------------------------


-------------------------------------------------------INSTALL MYSQL------------------------------------------------------------------------

wget -c https://repo.mysql.com//mysql-apt-config_0.8.15-1_all.deb 

sudo dpkg -i mysql-apt-config_0.8.15-1_all.deb 

sudo apt update

sudo apt-get install mysql-server

sudo mysql_secure_installation

sudo service mysql status

sudo apt-get update

sudo apt-get install mysql-workbench-community 

snap install mysql-workbench-community 


GRANT ALL PRIVILEGES ON *.* TO 'root'@'%';

sudo snap connect mysql-workbench-community:password-manager-service :password-manager-service

sudo apt  connect mysql-workbench-community:password-manager-service :password-manager-service

sudo killall -9 mysql_secure_installation

sudo mysql

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'root@123';

exit

sudo mysql -u root -p

ALTER USER 'root'@'localhost' IDENTIFIED BY 'YOURNEWPASSWORD';

FLUSH PRIVILEGES;


UPDATE user SET Password=PASSWORD('YOURNEWPASSWORD') WHERE User='root'; 

FLUSH PRIVILEGES;

sudo mysql -u root use mysql; [mysql] update user set plugin='mysql_native_password' where User='root'; [mysql] flush privileges;


--------------------------------------------------------------------------------------------------------------------------------------------


---------------------------------------------------CREATE AND DELETE------------------------------------------------------------------------

touch index.html

sudo touch.html

sudo mkdir index

mkdir index

sudo mv ------ /location/

sudo cp -r ----- /location/

sudo rm -rf -----------

rm -rf *

java -jar ----.jar

javac

javac JavaMysqlTest.java 

java JavaMysqlTest

hostname -I | cut -d' ' -f1 | cut -c 9-10

sshpass -p pathindia@76 rsync -avz -e 'ssh -o StrictHostKeyChecking=no' /home/lfu/ServerBackup/* --exclude=".*" lfu@192.168.71.5:/home/lfu/ServerBackup/

ls -l | grep mysql | grep -v grep

ls -l | grep.sql | tail-1

ls -l |grep .sql | tail -n 1

mysqldump -u root -p'root@123' abc --routines >" +"/"+theDir+"/MysqlDump"+formattedDate+".sql

sshpass -p 102 rsync -avz -e 'ssh -o StrictHostKeyChecking=no' /home/lfu/ServerBackup/ --exclude=.* anshul@192.168.0.120:/home/anshul/lmu/

for i in {01..24}; do ls  /home/anshul/ExemptionImg | grep "${i}_" | tail -1; done

vi path.properties

cat control.properties

locate proxy

sudo rm -rf /etc.....

ls -l /dev/usb

sudo chmod 777 /dev/usb/lp1

sudo echo "Anshul">> /dev/usb/lp1

--------------------------------------------------------------------------------------------------------------------------------------------


------------------------------------------------INSTALL eclipse,iReport & Java JDK----------------------------------------------------------

sudo apt-get install openssh-server

ip -a

ip a

echo $USER

sudo mv eclipse /opt/

sudo mv iReport-5.6.0 /opt/

sudo mv apache-tomcat-8.5.61 /opt/

sudo chmod 755 -R /opt/

sudo chown anshul:anshul -R /opt/

sudo desktop-file-install eclipse.desktop

sudo desktop-file-install ireport.desktop

java -version

javac -version

-------------------------------------------------------------------------------------------------------------------------------------------------


-----------------------------------------------rsync eclipse,  iReport and apache java JDK-------------------------------------------------------


sudo rsync -avz --progress  apache-tomcat-8.5.61 usr@192.168.0.193:

sudo rsync -avz --progress  iReport-5.6.0 usr@192.168.0.193:

sudo rsync -avz --progress  apache-tomcat-8.5.61 usr@192.168.0.193:

sudo rsync -avz --progress  eclipse usr@192.168.0.193:


sudo rsync -avz --progress  java_8_installation.sh  usr@192.168.0.193:./

sudo rsync -avz --progress  jdk-8u162-linux-x64.tar.gz   usr@192.168.0.193:./

-----------------------------------------------------------------------------------------------------------------------------------------------

usr/lib/cgi-bin
rsync -avz --progress cgi-bin demo@192.168.0.44:
 ssh -X demo@192.168.0.44
 
ServerName 192.168.0.44
chmod +x scriptname.cgi

sudo a2enmod cgi
sudo tail -10 /var/log/apache2/error.log

sudo systemctl restart apache2


--------------------------------------------------APACHE 2-------------------------------------------------------------------------------------

sudo apt install apache2

## Start command ##

sudo systemctl start apache2.service

sudo service apache2 start

## Stop command ##

sudo systemctl stop apache2.service

sudo service apache2 stop

## Restart command ##

sudo systemctl restart apache2.service

sudo service apache2 restart

a2enmod cgi

sudo apache2 en2mod 

network-manager restart

sudo a2enmod rewrite

sudo apt-get remove vlc

sudo apt-get update

sudo apt-get install vlc

sudo apt install default-jre

----------------------------------------------------------------------------------------------------------------------------------------------


REMOVE PASSWORD FROM COMMAND  :

###########################

sudo vi /etc/suduers

go to insert mode by press = !

write here---------

%sudo ALL=(ALL:ALL)ALL

prakash (ALL) NOPASSWORD: ALL

www.data ALL =(ALL) NOPASSWORD: ALL

esc : wq! press inter 

or
SHIFT +ZZ 

sudo service apache2 restart


//log file

var/log/apache2# rm -rf mysql-files

var/log/apache2# ls

var/log/apache2# rm -rf mysql-keyring

var/log/apache2# ls-l

var/log/apache2# tail -f error.log


//rsync file

sudo rsync -avz --progress filename 

rsync -av --progress /home/test/Desktop/Dir1 192.168.56.100:/home/test/Desktop/rsync


//mv command

mv filename.txt /home/username/Documents.

//ip address

ifconfig


 1972  install react --save

 1973  npm install react --save

 1974  npm install react-dom --save

 1975  npm install webpack --save

 1976  npm install webpack-dev-server --save

 1977  npm install webpack-cli --save

 1978  npm install babel-core babel-loader babel-preset-env 

 1980  npm  babel-preset-react html-webpack-plugin --save-dev

 1981  npm babel-preset-react html-webpack-plugin --save-dev

 1982  npm install html-webpack-plugin --save-dev

 1983  npm install babel-preset-react --save-dev

 1984  npm install babel-preset-env --save-dev

 2001  sudo  nvm list-remote

 2003  sudo curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.38.0/install.sh | bash

 2004  curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.38.0/install.sh 

 2008  sudo snap install curl

 2010  curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.38.0/install.sh | bash

 2011  source ~/.bashrc

 2012  nvm list-remote

 2013  nvm install v14.10.0

 2014  nvm ls-remote

 2017  nvm list-remote

 2018  nvm install lts/fermium

 2019  nvm ls-remote --lts=fermium

 2020  nvm list-remote

 2021  su -c 'apt install -y curl'



   15 cd apache2

   16  ls -l

   17  tail -f error.log

   18  cat error.log

   19  tail -f error.log

   20  node submitdata.js

   21  cat error.log

   22  tail -f error.log

   23  tail -f /var/log/apache2/error.log