Bash Shell Scripts and Linux Command Tutorials | BashShell.net

Using Git for Source Control

mike — Fri, 04 May 2012 13:00:21 +0000

GIT is the source control tool, a distributed version control system (dvcs) which is written in C. This provides a history of the files that are maintained by it. In distributed version control each...

Getting Started with the Command Line

mike — Sun, 05 Feb 2012 18:05:41 +0000

TweetIf you are new to Linux and need an introduction to the command-line there are several things to consider. 1. Get a Comprehensive Outline It is easy to spend time learning those topics of...

Automatically Detect File Changes on Your Server

mike — Sat, 04 Feb 2012 13:14:49 +0000

AIDE (Advanced Intrusion Detection Environment) is the Open Source version of Tripwire. AIDE takes a snapshot of every file on your server, records it and then will notify you of any changes. This...

Script: Find Frequency of Words in a File

mike — Sat, 04 Feb 2012 12:17:08 +0000

TweetFrequency of Words in a File In the 1980s a Bell Labs researcher Jon Bentley posed a challenge for someone to write a program that would take a text file, input an integer for n and print the...

Looping Through a List

mike — Thu, 22 Dec 2011 11:16:10 +0000

TweetWhen you write scripts for administrative purposes, often you may want to evaluate a list and then take actions based on the list. This script is an example of that process and is designed to...

Understanding Flow in a Script

mike — Wed, 07 Dec 2011 11:35:55 +0000

TweetFlow The order in which you set up commands to execute is called flow. This essentially sets commands to act the same each time they execute. However, there will be times when you want to...

Using diff to Compare Directories

mike — Fri, 02 Dec 2011 10:48:10 +0000

TweetThe diff command compares two files or directories and returns the differences. This provides you a way to monitor changes in an important directory like /etc which houses most configuration...

Changing umask

mike — Tue, 29 Nov 2011 00:50:47 +0000

umask Think of files as having a default permissions value of 666, and of directories as having a default permissions value of 777. When it comes to files, only program binaries and scripts need to...

Creating Directories with mkdir

mike — Mon, 28 Nov 2011 00:00:13 +0000

Tweetmkdir Use this command to create new directories. There aren’t a lot of options for it, so it’s quite easy to use. To create one directory, which we’ll call “data”,...

Exercise: Test Multiple Aspects

mike — Sat, 26 Nov 2011 15:44:08 +0000

TweetTest Multiple Aspects In many situations you will want to test for multiples aspects of the file or directory. There are also a number of ways that you can set up these multiple tests. This...