Dev {Tricks}

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How to install Linux Screen utility?

  1. Check whether Screen is installed 
    which screen
  2. If Screen is not installed on your system, run the following command:
    1. If your system uses yum, you can install Screen with the command below 
      yum install screen
    2. If your system uses apt, you can install Screen with the command below 
      apt install screen
  3.  To run a Screen session, enter the screen command. 
    screen
  4. If your session disconnects for some reason, log back in to your server and run the screen -r command. 
    screen -r

    This will reconnect you to your Screen session.

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How to update phpBB?

How to update your installation with the Full Package

  1. Backup all board files and the database.
  2. Go to the phpBB.com downloads page and download the latest “Full Package” archive.
  3. Unpack the archive.
  4. Delete/remove the config.php file, and the /images, /store and /files folders from the unpacked package on your local drive (PC).
  5. Go to the ACP, Board settings, and make sure prosilver is set as the default style. If not, set it to prosilver.
  6. Delete the /vendor and /cache folders from the board’s root folder on your host.
  7. Via FTP or SSH upload the remaining files and folders (that is, the remaining CONTENTS of the phpBB3 folder) to the root folder of your board installation on the server, overwriting the existing files. (Note: take care not to delete any extensions in your /ext folder when uploading the new phpBB3 contents.)
  8. Now start the update process by pointing your browser to the install folder. For example, https://domain.com/install
  9. Follow the steps to update the database and let that run to completion.
  10. Via FTP or SSH delete the /install folder from the root of your board installation.

You now have a new up to date board containing all your users and posts. Follow up tasks:

  • Update your language pack
  • Update your style

How to update your installation with the Advanced Update Package

The steps for updating phpBB3 using the advanced update package are:

  1. Go to the phpBB.com downloads page and download the “Advanced Update Package” archive.
  2. Unpack the archive.
  3. Upload the complete uncompressed “install” and “vendor” folders to your phpBB root directory (where your config.php file is).

Once uploaded your board will be offline for normal users due to the install directory you uploaded now being present.

Now start the update process by pointing your browser to the install folder. For example, https://ask.ojsexpert.com/install

You will then be guided through the update process. You will be notified once the update is complete.

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How to install CloudPanel on a dedicated server or any other cloud

For the installation, you need an empty server with Ubuntu 22.04 or Debian 11 with root access.

Install CloudPanel

  1. Login via SSH to the Server
  2. Before running the installer, we need to update the system and install the required packages. 
    apt update && apt -y upgrade && apt -y install curl wget sudo
  3. Run the installer with your preferred Database Engine for Ubuntu.
    1. Ubuntu 22.04 LTS with MySQL 8.0 
      curl -sS https://installer.cloudpanel.io/ce/v2/install.sh -o install.sh; \
echo "e0838864b7376b0390b4855d8d5c1425d83edffb38d2c980cf5b1c1a71d105bc install.sh" | \
sha256sum -c && sudo bash install.sh
    2. Ubuntu 22.04 with MariaDB 10.9 
      curl -sS https://installer.cloudpanel.io/ce/v2/install.sh -o install.sh; \
echo "e0838864b7376b0390b4855d8d5c1425d83edffb38d2c980cf5b1c1a71d105bc install.sh" | \
sha256sum -c && sudo DB_ENGINE=MARIADB_10.9 bash install.sh
    3. Ubuntu 22.04 with MariaDB 10.8 
      curl -sS https://installer.cloudpanel.io/ce/v2/install.sh -o install.sh; \
echo "e0838864b7376b0390b4855d8d5c1425d83edffb38d2c980cf5b1c1a71d105bc install.sh" | \
sha256sum -c && sudo DB_ENGINE=MARIADB_10.8 bash install.sh
    4. Ubuntu 22.04 with MariaDB 10.6 
      curl -sS https://installer.cloudpanel.io/ce/v2/install.sh -o install.sh; \
echo "e0838864b7376b0390b4855d8d5c1425d83edffb38d2c980cf5b1c1a71d105bc install.sh" | \
sha256sum -c && sudo DB_ENGINE=MARIADB_10.6 bash install.sh
  4. Run the installer with your preferred Database Engine for Debian.
    1. Debian 11 LTS with MySQL 8.0 
      curl -sS https://installer.cloudpanel.io/ce/v2/install.sh -o install.sh; \
echo "e0838864b7376b0390b4855d8d5c1425d83edffb38d2c980cf5b1c1a71d105bc install.sh" | \
sha256sum -c && sudo bash install.sh
    2. Debian 11 LTS with MySQL 5.7 
      curl -sS https://installer.cloudpanel.io/ce/v2/install.sh -o install.sh; \
echo "e0838864b7376b0390b4855d8d5c1425d83edffb38d2c980cf5b1c1a71d105bc install.sh" | \
sha256sum -c && sudo DB_ENGINE=MYSQL_5.7 bash install.sh
    3. Debian 11 LTS with MariaDB 10.9 
      curl -sS https://installer.cloudpanel.io/ce/v2/install.sh -o install.sh; \
echo "e0838864b7376b0390b4855d8d5c1425d83edffb38d2c980cf5b1c1a71d105bc install.sh" | \
sha256sum -c && sudo DB_ENGINE=MARIADB_10.9 bash install.sh
    4. Debian 11 LTS with MariaDB 10.8 
      curl -sS https://installer.cloudpanel.io/ce/v2/install.sh -o install.sh; \
echo "e0838864b7376b0390b4855d8d5c1425d83edffb38d2c980cf5b1c1a71d105bc install.sh" | \
sha256sum -c && sudo DB_ENGINE=MARIADB_10.8 bash install.sh
    5. Debian 11 LTS with MariaDB 10.7 
      curl -sS https://installer.cloudpanel.io/ce/v2/install.sh -o install.sh; \
echo "e0838864b7376b0390b4855d8d5c1425d83edffb38d2c980cf5b1c1a71d105bc install.sh" | \
sha256sum -c && sudo DB_ENGINE=MARIADB_10.7 bash install.sh

Access CloudPanel

Security
For security reasons, access CloudPanel as fast as possible to create the admin user. There is a small time window where bots can create the user. If possible, open port 8443 only for your IP via firewall.

You can now access CloudPanel with your IP address via Browser: https://IpAddress:8443

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How to check your Linux version?

Easy ways to view the distribution and version number of Linux OS.

Distribution version number

cat /etc/*release

For OS release details

cat /etc/os-release

For name and version number of your current distribution

lsb_release -d

To show additional information of current distribution version

lsb_release -a

Linux kernel version number

To shows the version of the Linux kernel that you’re currently using.

uname -r

For more information

uname -a

View everything at once

You have to install Inxi for this

apt-get -y install inxi

Once installed, you can view hardware, host, Linux kernel, desktop environment, and distribution with this simple command:

Inxi -Sz

 

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Move files in the Linux terminal

The mv command moves file(s) from one location to another.

To move a file from one directory to another with mv, remember the syntax below

mv <source> <destination>

For example,

mv example.zip /home

Check whether, it moves example.zip

ls /home

Rename the file as you move it

mv example.zip /home/newexample.zip

Rename a file without moving it to another location

mv example.zip renameexample.zip

Moving a directory

mv exampledir /home

Moving a file safely

mv --interactive example.zip /home

This will ask

mv: overwrite '/home/example.zip'?

If you do not want to manually intervene, use –no-clobber or -n instead.

mv --no-clobber example.zip /home