Linux

linux

#add non-root user with root privileges

sudo adduser linux
sudo passwd linux
  linuxpasswd
sudo visudo
  linux ALL=(ALL) ALL
  
#Nginx

  start nginx
    sudo /opt/nginx/sbin/nginx

  shutting down 
    ps auxw | grep nginx
    sudo kill pid
    
  OR
    sudo kill $(cat /opt/nginx/logs/nginx.pid)
  OR
    sudo /opt/nginx/sbin/nginx -s stop
  
  Kill the address :80 already in use
    sudo fuser -k 80/tcp

##References
  #Linux command sheet
    https://www.linuxtrainingacademy.com/wp-content/uploads/2016/12/LinuxCommandLineCheatSheet.pdf?__s=18ywpmczusmxjho5z9ar
    
## Public key download fix
  add proxy to the below command
  sudo apt-key adv --keyserver-options http-proxy=http://web-proxy.sgp.hp.com:8080/ --keyserver hkp://keyserver.ubuntu.com:80 --recv 0C49F3730359A14518585931BC711F9BA15703C6

## Increase file size
https://serverfault.com/questions/394842/how-can-i-increase-space-on-the-filesystem-linux