CSCI 373.005 Computer System Administration — Processes

Unix process model

• Kernel — fork, execve, exit, wait
• Note the hashbang
• ps
• proc file system
• process attributes
• standard input, output and error
• return codes

• the Unix shell
• bash — the Bourne-Again-SHell
  • Default terminal shell on Linux and macOS
  • Now available on Windows 10
• PowerShell — you can now get it for Linux and macOS

Too many shell scripting references

• BASH Programming - Introduction HOW-TO
• Bash scripting Tutorial
• Linux Shell Scripting Tutorial (LSST) v2.0
• Shell Style Guide

Let’s see what is being used.

Two useful programs

• IBM developerWorks tutorial on awk
• IBM developerWorks tutorial on sed
• Sed & awk: pocket reference (available from UNC Asheville library)

Python as a scripting language

• Python Scripts as a Replacement for Bash Utility Scripts
• Python input and output
• Python os module
• Python sys module
• Python multiprocessing module