Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying Embedded Linux Development Using Yocto Project Cookbook
  • Table Of Contents Toc
  • Feedback & Rating feedback
Embedded Linux Development Using Yocto Project Cookbook

Embedded Linux Development Using Yocto Project Cookbook

By : Alex Gonzalez
3.8 (8)
close
close
Embedded Linux Development Using Yocto Project Cookbook

Embedded Linux Development Using Yocto Project Cookbook

3.8 (8)
By: Alex Gonzalez

Overview of this book

The Yocto Project has become the de facto distribution build framework for reliable and robust embedded systems with a reduced time to market.You'll get started by working on a build system where you set up Yocto, create a build directory, and learn how to debug it. Then, you'll explore everything about the BSP layer, from creating a custom layer to debugging device tree issues. In addition to this, you’ll learn how to add a new software layer, packages, data, scripts, and configuration files to your system. You will then cover topics based on application development, such as using the Software Development Kit and how to use the Yocto project in various development environments. Toward the end, you will learn how to debug, trace, and profile a running system. This second edition has been updated to include new content based on the latest Yocto release.
Table of Contents (7 chapters)
close
close

Managing users and groups


It is also common to need to add or modify users and groups to our filesystem. This recipe explains how it is done.

Getting ready

User information is stored in the /etc/passwd file, a text file that is used as a database for the system user's information. The passwd file is human-readable.

Each line in it corresponds to one user in the system, and it has the following format:

<username>:<password>:<uid>:<gid>:<comment>:<home directory>:<login shell> 

Let's see each of the parameters of this format:

  • username: A unique string that identifies the user at login
  • uid: User ID, a number that Linux uses to identify the user
  • gid: Group ID, a number that Linux uses to identify the user's primary group
  • comment: Comma-separated values that describe the account, typically the user's contact details
  • home directory: Path to the user's home directory
  • login shell: Shell that is started for interactive logins

The default passwd file is stored with the...

Unlock full access

Continue reading for free

A Packt free trial gives you instant online access to our library of over 7000 practical eBooks and videos, constantly updated with the latest in tech

Create a Note

Modal Close icon
You need to login to use this feature.
notes
bookmark search playlist font-size

Change the font size

margin-width

Change margin width

day-mode

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Delete Bookmark

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Delete Note

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Edit Note

Modal Close icon
Write a note (max 255 characters)
Cancel
Update Note

Confirmation

Modal Close icon
claim successful

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY