HowTo: Change, Add, Remove LUKS passphrases

2014/12/16 15:12

In the article HowTo: Configure Luks On CentsOS/RHEL I wen through setting up encryption on my /home partition. There are a few other things that are needed such as changing the passphrase, or removing it, or even adding another passphrase to be shared with another user of /home.

HowTo: Configure LUKS on CentOS / RHEL

2014/12/16 14:19

LUKS is the standard for Linux hard disk encryption. By providing a standard on-disk-format, it does not only facilitate compatibility among distributions, but also provides secure management of multiple user passwords. If you use a laptop then you are best advised to ensure that at least your home partition is ...

Linux ACLs - Access Control Lists

2016/04/27 14:50

Most linux admins stop at basic file permissions and ignore using and learning Access Control Lists. ACL's is a very powerfull extenstion to basic file permissions. For example with ACLs you can set up a file in your home directory that can be read by a limited number of ...

Scheduling jobs with Cron

2016/04/30 23:19

There will be times when you will want to schedule some task to automatically occur in the future. There are 2 solutions that are available that let’s you do this “at”, and “cron”. The “at” utility is designed for scheduling an adhoc job, e.g. perform a patch installation ...

RHCSA 7 Exam Guide

2016/04/11 09:54

Here you will find resources (tutorials, book review, quiz, sample exams, etc) about the RHCSA exam (Red Hat Certified System Administrator) for RHEL 7 (Red Hat Enterprise Linux 7).The exam, also called EX200, is a performance-based exam lasting 2 hours and half, focusing on installation and server configuration. You ...