Book Image

Linux Shell Scripting Essentials

By : Sinny Kumari, Khem Raj
Book Image

Linux Shell Scripting Essentials

By: Sinny Kumari, Khem Raj

Overview of this book

Table of Contents (15 chapters)
Linux Shell Scripting Essentials
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Chapter 8. Scheduling Tasks and Embedding Languages in Scripts

Until now, we learned about various useful shell utilities and how to write them into a shell script in order to avoid writing the same instructions again and again. Automating tasks by writing into scripts reduces the tasks up to a certain extent, but still we will have to run those scripts whenever required. Sometimes, it happens that we want to run a command or script at a particular time, for example, sysadmin has to run a clean-up and maintenance of a system available in the data center at 12:30 AM. To perform the required operation, sysadmin will login into a machine around 12:30 AM and do the necessary work. But what if his or her home network is down and the data center is far? It will be inconvenient and tough to perform a task at that moment. There are also a few tasks that need to be performed on daily or hourly basis, for example, monitoring the network usage of each user, taking a system backup, and so on. It will...