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Everyday Notes from a Unix Administrator. A website created to serve as online notes, documentation, tips and tricks for System administrators.

 

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RAID Types – Explained
All hardware eventually fails. This is one of the painful side effects of entropy in our universe. For most of
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Linux file Permission – Oversimplified
Here’s a quick and dirty example to demonstrate Linux file permissions and how to read them.
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Manipulating text with sed
The sed utility can be used to print the contents of a file, substitute a line (or multiple lines), and
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The /etc/passwd File
There are several different authentication schemes that can be used on Linux systems. The most commonly used and standard scheme
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How To Simulate Linux Commands
Every Linux command has one or more options and flags to perform different operations. One of the useful and important
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The /etc/shadow File
There are several different authentication schemes that can be used on Linux systems. The most commonly used and standard scheme
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Replacing rc.local in systemd Linux systems
Missing rc.local for adding commands to run on startup? Here’s how to set up similar functionality with today’s systemd. The
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Using lsof to Recover Deleted Files
If an open file is deleted accidentally, it is possible to use lsof to recreate a copy of the file; provided this
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Create test Apache site with Docker
After creating your EC2 instance and connecting using PuTTY, this tutorials shows steps on how to run docker and setup
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Connect to Linux EC2 instance using PuTTY
When you create a new EC2 instance and created new keys, the keys are on the pem key format. This
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