CIS241

System-Level Programming and Utilities

History

Erik Fredericks, frederer@gvsu.edu
Fall 2025

Based on material provided by Erin Carrier, Austin Ferguson, and Katherine Bowers

How do you remember what you did?

How do you remember what you did?

Method #1 - manually record with a script

Usage:

• script <optional filename>
• Records inputs and outputs, can be viewed later
• Use exit to stop recording

A question!

• When would this be useful?

How do you remember what you did?

How do you remember what you did?

Method #2 - look at your command history

• Maybe scroll up if you have an interactive terminal
• Or use the up/down arrow keys to show recent commands
• Or better yet, use the history command
  • Usage: history <optional number of lines>
  • Better usage: history | grep <what you want to find>