Ubuntu

How to zip all files in a directory in Ubuntu

Linux zip command can be used to zip all files in a directory. Just write down below command in terminal and it will zip all file in directorytozip.  -r option will make sure that all files including dot files zipped recursively.

 zip -r filename.zip /directorytozip  
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How to Start, Restart, Stop Apache and MySQL on Latest version of Ubuntu

Ubuntu is one of the most used Linux derivative. I also use Ubuntu to deploy websites on Cloud servers. Here are quick snippets to manage Apache http server and MySQL database server.

Managing Apache Server

Starting Apache

sudo service apache2 start

Restarting Apache

sudo service apache2 restart

Stopping Apache

sudo service apache2 stop

In same way MySQL Database server can also be managed.

Starting MySQL

sudo service mysql start

Restarting MySQL

sudo service mysql restart

Stopping MySQL

sudo service mysql stop
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adminHow to Start, Restart, Stop Apache and MySQL on Latest version of Ubuntu

How to Enable Root Login to Google Cloud vis SSH

To enable Root Login to Google Cloud, Please follow these instructions.

Open SSH configuration file

nano /etc/ssh/sshd_config

Enable Root login and Password Authentication.

PermitRootLogin yes 
PasswordAuthentication yes

Restart SSH server

systemctl restart sshd

Set root password if not set already

 passwd root 
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How to change hostname in Ubuntu 17.04 Zesty Zapus

 

Hostname can be changed in Ubuntu 17.4  manually by editing this files

 /etc/hostname & /etc/hosts

and then restarting Hostname Service by

service hostname restart

It sometimes produces errors like

Failed to restart hostname.service: Unit hostname.service is masked.

Best Method for new versions of Ubuntu is:

sudo hostnamectl set-hostname NewHostName

Its work very well and produces no error.

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