The standard Linux directory structure mostly follows the POSIX Filesystem Hierarchy Standard. One of the system folders most commonly edited or modified is the /etc directory. Here’s a summary of what files/folders should you expect to see here and what are their functions.
Mainly, the /etc contains system-global configuration files, which affects how programs run and how the behaves for all users.
Tag: Red Hat
Red Hat Linux
Important MySQL commands
The following tutorials are example of the essential MySQL commands and techniques needed by system administrators. Although there are people/departments that specializes on Database administration, knowing these commands will help you understand and collaborate effectively with database administrators.
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Additional MySQL Commands
When you forgot the password to your MySQL server, you can reset it using the following steps. This will require a downtime since you are going to stop MySQL service. After this, remember to keep you mysql root password.
Create a swap file in Linux
Some VPS on hosting providers like Amazon Web Services do not have swap by default. Or if your server was configured with small swap and now you want to increase it. Below are instructions on how to increase swap area.
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SFTP Server with chroot Setup CentOS 6 / RHEL 6
SFTP provides a secure way for providing FTP access to clients. It comes built-in with the openssh-server package. Creating SFTP accounts is straightforward like normal user accounts. However if you want to limit the users to access their designated folder only, then a chroot setup is needed. This improves security in a way that sftp users cannot login to a normal bash shell and they cannot view system folders when they are logged-in. This tutorial will walk you though SFTP server setup.
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DNS Server Setup for Centos 6 / RHEL 6
DNS stands for Domain Name System, or Domain Name Server. DNS resolves an IP address to a hostname or vice versa. This tutorials walks through the installation and setup of a Bind9 DNS server for Centos 6/RHEL 6. This is just for a master DNS server and setup of a slave is not covered.
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Setup NFS share in Linux
Network File System (NFS) is the standard protocol used for sharing files/folder between Linux/Unix systems. This is helpful on production environments that requires a common folder on multiple servers. NFS shares provide quick and efficient file/folder sharing between systems. It’s easy to configure and setup. It’s not compatible on windows machines though- you can Samba protocol for this. This tutorial is done on CentOS but will also work on Ubuntu and other Linux OS.
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Installing Transmission Daemon on CentOS 6 / RHEL 7
Transmission is a popular torrent client on modern Linux systems. It has both a GUI for desktop and a daemon that can run on headless servers such as an Amazon VPS. An advantage of running it on Amazon is that torrents will be downloaded faster since the VPS bandwidth is higher, then you can just directly download your file from your VPS. This helps offload the torrent traffic from your own internet connection.
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