Rasberry Pi 4 can't connect to WiFi ubuntu server [fixed]

 In this tutorial, How to connect to WiFi ubuntu server on Rasberry Pi  4. Today, I buy Rasberry PI 4 new and install ubuntu 20.04 LTS. root...

How to change the order of columns in the output

In this tutorial, How to change the order of columns in the output of `uniq -c` command. I use read the file and show the unique Name from t...

ntfsfix fix NTFS not mount from Linux

Today, I have not mount usb external USB into Fedora 32. External USB drive is NTFS formatted.  I will installed ntfs-3g  package for fedora...

Fix semanage command not found in Centos 8

 In this tutorial, I have fix semanage command not found in Centos 8. Semanage is an SELinux (Security-Enhanced Linux) management tool  Erro...

How to Upgrade php version on Centos 7

 In this tutorial, How to upgarde php version on Centos 7. My Server have installed php71. I will upgrade php to version php74 Type the fol...

How to Install Specific Version of Package use YUM

In this tutorial, I will use YUM command to install specific version of Package. Step 1: How to list the available package version in o...

How to resolve Error: rpmdb open failed In CentOS

In this tutorial, How to resolve Error: rpmdb open failed Error In CentOS. I was testing on nginx web server in Centos 7 VM Linode . Unfortu...

Remove old kernels in CentOS, RHEL and Fedora

Your system to many old kernels version. How to remove old kernels in CentOS , RHEL and Fedora . For example, I have three kernel,and to ke...

How to install aide centos

In this tutorial, How to install aide Centos. What does Aide mean AIDE is one of the most popular tools for monitoring the server chang...

After install setup Fedora 30

In this tutorial, Things to Do After Fresh Installation Fedora 30. Let do it! TO DO 1. Update your Fedora Always keep your system ...