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Questions

Fix Semanage Command Not Found Error

How to Fix ‘semanage command’ Not Found Error in CentOS/RHEL

1 Comment

I am trying to configure a Samba share with correct boolean and security context values using semanage command to make changes in SELinux policy to allow access to Samba share from remote clients on

Fix Cannot Find Valid Baseurl for Repo

How to Fix “Cannot find a valid baseurl for repo” in CentOS

16 Comments

One of the commonest errors CentOS users encounter when using YUM package manager (for example running yum update command), especially on a freshly installed system is the “Cannot find a valid baseurl for repo:

Fix “No route to host” SSH Error

How to Fix “No route to host” SSH Error in Linux

2 Comments

SSH is the most secure means of connecting to Linux servers remotely. And one of the common errors encountered while using SSH is the “ssh: connect to host port 22: No route to host”.

Fix SSH Too Many Authentication Failures

How to Fix “SSH Too Many Authentication Failures” Error

6 Comments

Sometimes, while trying to connect to remote systems via SSH, you may encounter the error “Received disconnect from x.x.x.x port 22:2: Too many authentication failures”. In this short article, I will explain how to

Fix Passwd: Authentication token manipulation Error

How to Fix “passwd: Authentication token manipulation error” in Linux

10 Comments

In Linux, the passwd command is used to set or change user account passwords, while using this command sometimes users may encountered the error: “passwd: Authentication token manipulation error” as shown in below example.

Fix Nginx 400 Bad Request SSL Error

Fix “The plain HTTP request was sent to HTTPS port” Error in Nginx

3 Comments

In this article, we will show how to solve the “400 Bad Request: The plain HTTP request was sent to HTTPS port” in Nginx HTTP server. This error normally arises when you try to

Fix “firewall-cmd: command not found” Error

How to Fix “firewall-cmd: command not found” Error in RHEL/CentOS 7

2 Comments

firewall-cmd is a command line front-end for firewalld (firewalld daemon), a dynamic firewall management tool with D-Bus interface. It supports both IPv4 and IPv6; it also supports networks firewall zones, bridges and ipsets. It

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