Linux Lab 5: Quoting and File Utilities

Authority mappings

Checkpoint 1: Command Substitution

• 1 command substitution 4 pts
  Use $(date +%F) inside a string. Also demonstrate backticks.

Checkpoint 2: Single vs Double Quotes

• 1 quoting depth 3 pts
  Test NAME=world and all three echo forms.

Checkpoint 3: File Utilities

• 1 wc/head/tail/cut 5 pts
  Use wc -l, head -n 5, tail -n 5, cut -d, -f 2 on a CSV.

Checkpoint 4: grep Basics

• 1 grep flags 5 pts
  grep -i, grep -n, grep -v, grep -c, grep -r on a log file.
• 2 regex basics 4 pts
  Use grep with ^, $, [0-9], \. anchors.

Checkpoint 5: tar Archives

• 1 tar create/extract 5 pts
  tar -czvf backup.tar.gz *.txt. Then tar -xzvf to extract.