Skip to content

2023 Boost - Week 6#

This week is focused on text file filtering, transformation, sorting, and editing in-place (without a terminal editor). We also introduce the ed, the "standard UNIX terminal editor" (so that we can better understand commands and editors that have been derived from it).

📺 https://youtu.be/iwxh9w1AGIc

  1. What is the difference between a carriage return and line return?
  2. How do I print a carriage return in output?
  3. What is the difference between echo and printf?
  4. What is a "string"?
  5. What's POSIX and why do I care?
  6. How do I filter out only certain lines of a file?
  7. How do I search within a file from command line?
    • grep
    • bash while loop (but we'll cover that later)
  8. What are "regular expressions" and why do I care?
  9. What is the difference between "basic" and "extended" regex?
  10. How do I ensure I'm always using "extended" regex?
  11. What is a "field"?
  12. What is "white space"?
  13. How do I limit output to just the n-th column?
    • awk
Last update: 2023-06-10