• 본 과정은 리눅스 서버 운영환경에서 복잡한 관리 작업을 자동으로 진행시켜 업무 효율을 높이기 위한 스크립트 작성요령을 배울 수 있습니다.
• 변수 선언, 분기와 반복 제어문, 배열, 함수 등의 리눅스 Bash Shell 문법과 구조를 소개하고, 정규 표현식과 awk, sed 명령어를 사용한 Shell 스크립트 응용 방법을 배웁니다.
• Linux Bash Shell의 여러 구문을 이해하여 운영에 필요한 스크립트를 작성하거나 이미 작성되어 사용되고 있는 스크립트의 활용도를 높일 수 있는 능력 개발을 학습의 목표로 합니다.

리눅스 시스템 관리자 및 관리를 계획하는 자

Introduction to Bash Shell Scripts

• What is a shell script?
• Script execution
• The subprocess environment
• Shell features Shell Scripting
• Which shell?
• Recommended script format
• Planning to write a shell script
• Portability issues Variables
• Variables
• Displaying and using variables
• Concatenation and substrings
• Other sources of data for variables User Input
• Reading user input
• Positional parameters
• Creating positional parameters
• Conditional substitution
• External influences Designing Program Output
• Variable attributes
• Formatted data
• Cursor positioning and terminal echo Shell Arithmetic
• Creating integer-only variables
• Base10 and others
• Working with arithmetic operators and data Branches and Logic Testing
• Logic testing
• Conditional operators
• Multiway decision branching and the case Statement Shell Patterns
• Basic expressions
• More complex patterns
• Pattern combinations Program Loops
• The while loop
• The until loop
• The for loop
• Breaking out of a loop
• Continue and exit commands
• The select loop The getopts Command
• Processing arguments
• The getopts and OPTARG variable
• The OPTIND variable Array Variables
• Substituting and counting
• Using integer variables as element numbers Functions
• Displaying current shell functions
• Declaring and using functions
• Variable scope
• Function libraries and recursion Managing Input and Output
• File descriptors
• Reading and writing using file descriptors
• Redirecting, parameter lists, and here documents
• Creating parameter lists from input lines Traps and Signals
• Common signals
• The trap and stty commands Regular Expressions
• Regular expressions
• Metacharacters
• The grep command Introduction to awk
• Record processing
• Pattern matching and printing
• Relational expressions
• awk variables Variables, Strings, and Arithmetic Operations
• awk user-defined variables
• Environment variables
• Arithmetic operations
• String manipulation
• Formatted output
• Command line arguments awk Flow Control
• Conditional if, while, and for loops
• Arrays
• getline, next, and exit
• Processing arrays
• Associative arrays Stream Editing with sed
• Substituting text
• Deleting and printing lines
• Reading and writing files
• Multiple sed editor functions

Linux Fundamentals(U8583S)

• Linux System Administration(H7091S)
• Linux Network Services(H7091S)