Linux Shell Basics

The course focuses on the basics of Linux command line shell and common command line tools such as vi, ls, grep. The course covers simple shell scripting (all examples are provided for ksh). Conditional statements, cycles, special variables, functions.

Also, on the course you will learn about the principles of the POSIX file system that are used in Linux. Basic data types (files, links, named pipes, special files). Introducing to the Operational System Linux (users and groups, remote ssh, process and jobs, text editor VI, scheduler cron)

After completing the training, trainees will be able to:

1. Work with Linux command line, navigate through the file system, check OS resources
2. Create and execute simple scripts in ksh

Use popular command line tools, read and operate with the information and automatize all of the above

• Introduction to shell

• Terminology (shell, GUI, CLI, terminal)
• Basic syntax (arguments and options)
• Internal and external commands
• File masks, paths
• Popular commands for navigate and operate with files and directories, system information commands (ls, who, pwd, date, cd, mkdir, cp, mv, etc…)

• Input and Output

• Reading text files
• i/o redirection
• processing redirected output (grep, sort, wc)

• Variables in Shell

• Data types
• Escaping and quote rules
• Special symbols
• Environment variables, system variables

• Arithmetic CLI

• File System

• Files, directories, special files
• Virtual file systems (devfs, procfs)
• Short compare of popular file systems
• How file stored on disk. Fragmentation
• File and directory permissions
• Users and groups. Management.
• Super user, su and sudo commands
• Hard links, soft links, named pipes
• Mount points, /etc/fstab

• Text editor Vi

• Scheduler Cron