1. Significance of Scripting Languages for Operating System Administration Vladimir Mateljan Željka Požgaj Krunoslav Peter INFuture2007

2. Introduction analysis of scripting programming languages why they are significant for operating system (OS) administration, especially for automating administration tasks

3. OS Administration GUI Tool – pointing and clicking Command Line – writing and executing commands

4. Automation of OS Administration sequences of OS’s shell commands – simple programming solutions – scripts scripting languages (SLs) can be used for development of program solutions used in the automation of OS administration with a minimum code usage

5. Scripting Programming Languages interpreted programming languages building applications from reusable components rapid application development building minimalist but functional program solutions examples: bash – shell SL awk – a pattern scanning and text processing language

6. The Shell Language - bash simple and expressive syntax: command: command [switch] [argument] statement: command [; command] piping (sending data from one to another command): command [| command] redirection (sending data to file): command [> file] script: statement [statement]

7. The Pattern Scanning and Text Processing Language - awk the syntax for invoking awk: specifying a script on the command line: awk ‘script’ file [file] invoking awk with a script file: awk -f script file [file] the structure of the awk script: pattern { procedure }... example – counting rows in text file : $ awk '{ i++ } END { print i }' file.txt

8. Statement, Alias, and Script statement: $ ls | grep txt | wc -l alias: $ alias lsx='ls | wc -l' script: #!/bin/bash echo __Text Docs__ > doc.txt ls | grep doc >> doc.txt

9. Pragmatics of SL simple and expressive syntax single data type – string powerful operations – piping and redirection example – stoping process that has string “sleep” in name: $ ps | awk '$4 ~ /sleep/ { cmd = "kill -9 " $1; print | cmd }'

10. Significance of SLs for OS Administration scripts – tools for automating common administration tasks additional benefits: documenting steps of administration tasks history (execution log)

11. Conclusion SLs are appropriate for rapid development of program solutions used in the automation of OS administration with a minimum code usage integration of reusable components from the framework that includes OS's shell commands