Training > Web & Application Development > Developing Applications For Linux (LFD401)

Developing Applications for Linux (LFD401)

Learn how to develop applications for the Linux environment. In this instructor-led course, you’ll get hands-on experience with the necessary tools and methods for Linux application development and learn about the features and techniques that are unique to Linux.

Who Is It For

This course is for experienced developers. Students should be proficient in C programming, and be familiar with basic Linux utilities and text editors.
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What You’ll Learn

In this course you will learn about the tools and methods for developing C programs and doing systems programming under Linux, debugging techniques, process management, Linux specific paid and system calls, and more.
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What It Prepares You For

This course will prepare you to develop applications for a Linux environment.
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Course Outline
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- Objectives
- Who You Are
- The Linux Foundation
- Copyright and No Confidential Information
- Linux Foundation Training
- Certification Programs and Digital Badging
- Linux Distributions
- Platforms
- Preparing Your System
- Using and Downloading a Virtual Machine
- Things Change in Linux and Open Source Projects
- Procedures
- Standards and the LSB
How to Work in OSS Projects **
- Overview on How to Contribute Properly
- Know Where the Code is Coming From: DCO and CLA
- Stay Close to Mainline for Security and Quality
- Study and Understand the Project DNA
- Figure Out What Itch You Want to Scratch
- Identify Maintainers and Their Work Flows and Methods
- Get Early Input and Work in the Open
- Contribute Incremental Bits, Not Large Code Dumps
- Leave Your Ego at the Door: Don’t Be Thin-Skinned
- Be Patient, Develop Long Term Relationships, Be Helpful
- Other Compilers
- Major gcc Options
- Preprocessor
- Integrated Development Environments (IDE)
- Labs
- Static Libraries
- Shared Libraries
- Linking To Libraries
- Dynamic Linking Loader
- Labs
- Using make and Makefiles
- Building large projects
- More complicated rules
- Built-in rules
- Labs
Source Control
- Source Control
- RCS and CVS
- Subversion
- git
- Labs
Debugging and Core Dumps
- gdb
- What are Core Dump Files?
- Producing Core Dumps
- Examining Core Dumps
- Labs
Debugging Tools
- Getting the Time
- Profiling and Performance
- valgrind
- Address Sanitizer
- Labs
System Calls
- System Calls vs. Library Functions
- How System Calls are Made
- Return Values and Error Numbers
- Labs
Memory Management and Allocation
- Memory Management
- Dynamical Allocation
- Tuning malloc()
- Locking Pages
- Labs
Files and Filesystems in Linux **
- Files, Directories and Devices
- The Virtual File System
- The ext2/ext3 Filesystem
- Journaling Filesystems
- The ext4/ Filesystem
- Labs
File I/O
- UNIX File I/O
- Opening and Closing
- Reading, Writing and Seeking
- Positional and Vector I/O
- Standard I/O Library
- Large File Support (LFS)
- Labs
Advanced File Operations
- Stat Functions
- Directory Functions
- inotify
- Memory Mapping
- flock() and fcntl()
- Making Temporary Files
- Other System Calls
- Labs
Processes - I
- What is a Process?
- Process Limits
- Process Groups
- The proc Filesystem
- Inter-Process Communication Methods
- Labs
Processes - II
- Using system() to Create a Process
- Using fork() to Create a Process
- Using exec() to Create a Process
- Using clone()
- Exiting
- Constructors and Destructors
- Waiting
- Daemon Processes
- Labs
Pipes and Fifos
- Pipes and Inter-Process Communication
- popen() and pclose()
- pipe()
- Named Pipes (FIFOs)
- splice(), vmsplice() and tee()
- Labs
Asynchronous I/O**
- What is Asynchronous I/O?
- The POSIX Asynchronous I/O API
- Linux Implementation
- Labs
Signals - I
- What are Signals?
- Signals Available
- Dispatching Signals
- Alarms, Pausing and Sleeping
- Setting up a Signal Handler
- Signal Sets
- sigaction()
- Labs
Signals - II
- Reentrancy and Signal Handlers
- Jumping and Non-Local Returns
- siginfo and sigqueue()
- Real Time Signals
- Labs
POSIX Threads - I
- Multi-threading under Linux
- Basic Program Structure
- Creating and Destroying Threads
- Signals and Threads
- Forking vs. Threading
- Labs
POSIX Threads - II
- Deadlocks and Race Conditions
- Mutex Operations
- Semaphores
- Futexes
- Conditional Operations
- Labs
Networking and Sockets
- Networking Layers
- What are Sockets?
- Stream Sockets
- Datagram Sockets
- Raw Sockets
- Byte Ordering
- Labs
Sockets - Addresses and Hosts
- Socket Address Structures
- Converting IP Addresses
- Host Information
- Labs
Sockets - Ports and Protocols
- Service Port Information
- Protocol Information
- Labs
Sockets - Clients
- Basic Client Sequence
- socket()
- connect()
- close() and shutdown()
- UNIX Client
- Internet Client
- Labs
Sockets - Servers
- Basic Server Sequence
- bind()
- listen()
- accept()
- UNIX Server
- Internet Server
- Labs
Sockets - Input/Output Operations
- write(), read()
- send(), recv()
- sendto(), recvfrom()
- sendmsg(), recvmsg()
- sendfile()
- socketpair()
- Labs
Sockets - Options
- Getting and Setting Socket Options
- fcntl()
- ioctl()
- getsockopt() and setsockopt()
- Labs
Netlink Sockets**
- What are netlink Sockets?
- Opening a netlink Socket
- netlink Messages
- Labs
Sockets - Multiplexing and Concurrent Servers
- Multiplexed and Asynchronous Socket I/O
- select()
- poll()
- pselect() and ppoll()
- epoll
- Signal Driven and Asynchronous I/O
- Concurrent Servers
- Labs
Inter Process Communication
- Methods of IPC
- System V IPC**
- Labs
Shared Memory
- What is Shared Memory?
- POSIX Shared Memory
- System V Shared Memory**
- Labs
- What is a Semaphore?
- POSIX Semaphores
- System V Semaphores**
- Labs
Message Queues
- What are Message Queues?
- POSIX Message Queues
- System V Message Queues**
- Labs
Closing and Evaluation Survey
- Evaluation Survey

** These sections may be considered in part or in whole as optional. They contain either background reference material, specialized topics, or advanced subjects. The instructor may choose to cover or not cover them depending on classroom experience and time constraints.
This course is for experienced developers. Students should be proficient in C programming, and be familiar with basic Linux utilities and text editors.
Feb 2024
Instructor Frank Edwards was top knotch! His tangents away from, and insights into the source material where very interesting, and helped keep the content engaging.
Feb 2024
The instructor was exceptionally knowledgeable about each topic covered in the course, providing a more practical, "real-world" insight into how the topics connect, rather than just simply linearly going through them.
Feb 2024
The system call section onwards was incredibly useful, I would say that's where 70-80% of the value was for our team.
Nov 2023
Very good course, I really liked it. I look forward to taking LFD420 in a few years time, once I have more experience.
Nov 2023
The instructor, Frank Edwards, was clearly very knowledgeable, and could give practical tips on how something might be useful to a developer, or why something works a certain way. He was also able to answer questions in depth, and communicated clearly.