Book Image

Linux Shell Scripting Cookbook, Second Edition - Second Edition

Book Image

Linux Shell Scripting Cookbook, Second Edition - Second Edition

Overview of this book

The shell remains one of the most powerful tools on a computer system — yet a large number of users are unaware of how much one can accomplish with it. Using a combination of simple commands, we will see how to solve complex problems in day to day computer usage.Linux Shell Scripting Cookbook, Second Edition will take you through useful real-world recipes designed to make your daily life easy when working with the shell. The book shows the reader how to effectively use the shell to accomplish complex tasks with ease.The book discusses basics of using the shell, general commands and proceeds to show the reader how to use them to perform complex tasks with ease.Starting with the basics of the shell, we will learn simple commands with their usages allowing us to perform operations on files of different kind. The book then proceeds to explain text processing, web interaction and concludes with backups, monitoring and other sysadmin tasks.Linux Shell Scripting Cookbook, Second Edition serves as an excellent guide to solving day to day problems using the shell and few powerful commands together to create solutions.
Table of Contents (16 chapters)
Linux Shell Scripting Cookbook
About the Authors
About the Reviewers

Gathering system information

Collecting information about the current system from the command line is very important in logging system data. The different system information data includes hostname, kernel version, Linux distro name, CPU information, memory information, disk partition information, and so on. This recipe will show you different sources in a Linux system to gather information about the system.

How to do it...

  1. In order to print the hostname of the current system, use:

    $ hostname


    $ uname -n
  2. Print long details about the Linux kernel version, hardware architecture, and more by using:

    $ uname -a
  3. In order to print the kernel release, use:

    $ uname -r
  4. Print the machine type as follows:

    $ uname -m
  5. In order to print details about the CPU, use:

    $ cat /proc/cpuinfo

    In order to extract the processor name, use:

    $ cat /proc/cpuinfo | sed -n 5p

    The fifth line contains the processor name.

  6. Print details about the memory or RAM as follows:

    $ cat /proc/meminfo

    Print the total memory (RAM) available...