Mission 114

Cut field selection

Extract colon-delimited identity fields.

Text and logs
8 minutes Core Lesson 114 of 360
cutcat
Lesson 114 of 360 0/360 lessons 0/17 missions Text and logs · 8 minutes
0%
Continue View profile
Ops lab terminal Training lab
New learnerrank 0XP 0%complete
learner@clairos:/home/learner $ Unix ops lab: type a command, press Enter
Instructions 8 minutes

Click any instruction for the command details, the why, and the common mistake to avoid.

Extract names

Run cut -d : -f 1 /etc/passwd.

cut -d : -f 1 /etc/passwd
Extract ids

Run cut -d : -f 3 /etc/passwd.

cut -d : -f 3 /etc/passwd
Read source

Run cat /etc/passwd.

cat /etc/passwd
Lesson support

What to notice while you play.

Objective

Extract colon-delimited identity fields.

Hint

Run the commands in order and compare the outputs.

Why it matters

Junior operators build confidence by gathering evidence before changing systems.

Common mistakes
  • Skipping the inspection step.
  • Assuming one command tells the whole story.
Reference

Commands in this lesson.

cat <file>

Print text file contents.

cut -d <char> -f <n>

Extract delimited fields from text.