How to: Harden My Filesystem in Linux

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Linux Files: Creating, Listing, Updating, and More


There’s a lot more to working with files on Linux than creating, listing and updating them. After all, files can be Linux commands (i.e., binaries), scripts, images, simple text files, pointers to other files or folders. You might remember the "everything is a file" description of Unix and Linux systems.

How to Encrypt Files in Linux with Tomb


Tomb is a simple shell script that allows you to encrypt files in Linux. Unlike full disk encryption, Tomb enables you to only include the files and folders that you want to encrypt. Here we show you how to install and use Tomb on Ubuntu.

How to Add a User to the sudoers File in Linux


The people who can use the Linux sudo command are members of a small and select club, sometimes called the “sudoers” list. Each member has the same powers as root. So how do you join that club? We’ll walk through adding a person to sudoers as well as editing the sudoers file to limit permissions.

How to Use Chroot in Linux and Fix Your Broken System


Chroot is a Linux/Unix utility that can change or modify the root filesystem. With the help of the chroot command, you can easily create an isolated filesystem inside your primary filesystem. Chroot is especially helpful to make your work and home environment separated or if you want a test environment to test software in isolation.

Get No-Fuss File-Level Crypto With Fscrypt


Learn how to use fscrypt to create an encrypted filesystem - but be warned: this involves tinkering on the command line and doing a partially or fully manual operating system installation. However, if you are willing to put in the time and effort, you will enjoy a high-performing computing experience with seamless modern encryption protection.