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Fdisk command line in Linux to help to manage partitions

fdisk command line utility is used to view and manage hard disks and partitions on Linux systems.

  • Commonly used fdisk commands. 
    n – Create partition
p – print partition table
d – delete a partition
q – exit without saving the changes
w – write the changes and exit.
  • Display disk cylinders | View all existing disk partitions | command to list the partitions | View all Disk Partitions in Linux | List Partitions 
    fdisk -l
  • View partitions of a specific hard disk (for example, vda) 
    fdisk -l /dev/vda
  • To get more information detailed and size readable by human of a specific hard disk. 
    partx -s /dev/vda
  • Delete a hard disk partition
    If you would like to combine several partitions (for example, /dev/vda2 and /dev/vda3) into a single disk partition, you have to first delete all those individual partitions, as shown below.

    fdisk /dev/vda

    Then

    Command (m for help): p

    Then

    Command (m for help): d

    Then

    Partition number (1-5): 3

    Then

    Command (m for help): d

    Then

    Partition number (1-5): 2

    Then

    Command (m for help): w
  • Create a new disk partition 
    fdisk /dev/sda
    Command (m for help): n

 

 

 

 

 

 

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How to extract .tar.gz Files in Linux

A tarball is a group of files that are bundled together using the tar command.

  1. Use following command line to uncompress .tar.gz file. For example, name.tar.gz 
    $ tar xvzf name.tar.gz

    Where,
    x = Tells tar to extract the files.
    v = Stands for “verbose” will list all of the files one by one in the archive.
    z = Tells the tar command to uncompress the file (gzip).
    f = Tells tar to give it a file name to work with.

  2. To uncompress into a different directory 
    $ tar xvzf name.tar.gz -C /path/to/directory

    Where,
    c = change the directory 

  3. To extract specificc file from .tar.gz tarball. For example, myfile.php 
    $ tar -xvzf name.tar.gz myfile.php
  4. To view detailed file list 
    $ tar -tvf name.tar.gz

 

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How to create One-Click login to RoundCube and phpMyAdmin ?

To enable one-click login for RoundCube

cd /usr/local/directadmin/
./directadmin set one_click_webmail_login 1
service directadmin restart
cd custombuild
./build update
./build dovecot_conf
./build exim_conf
./build roundcube

To enable one-click login for phpMyAdmin

cd /usr/local/directadmin/
./directadmin set one_click_pma_login 1
service directadmin restart
cd custombuild
./build update
./build phpmyadmin

To disable browser access to phpMyAdmin

cd /usr/local/directadmin/custombuild
./build update
./build set phpmyadmin_public no
./build phpmyadmin