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Command Piping and Redirection
In this hands-on lab, we will use piping and redirection to populate a file with the specific results of commands. Understanding piping and redirection takes practice, and in this lab you will practice both to populate a file using redirection with data process with piping. By the end of this lab, you should be comfortable piping output from one command to another, and redirecting the output to a file.

Lab Info
Table of Contents
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Challenge
Determine the Number of Files and Folders in `/usr/share`
- Run the following commands:
ls /usr/share/ | wc -l
ls /usr/share/ | wc -l > ~/value.txt
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Challenge
Determine the Number of Unpacked Entries in `/var/log/dpkg.log`
- Run the following commands:
cat /var/log/dpkg.log | grep unpacked | wc -l
cat /var/log/dpkg.log | grep unpacked | wc -l >> ~/value.txt
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Challenge
Determine the Total Number of Entries in `/var/log/dpkg.log`
- Run the following commands:
cat /var/log/dpkg.log | wc -l
cat /var/log/dpkg.log | wc -l >> ~/value.txt
About the author
Real skill practice before real-world application
Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.
Learn by doing
Engage hands-on with the tools and technologies you’re learning. You pick the skill, we provide the credentials and environment.
Follow your guide
All labs have detailed instructions and objectives, guiding you through the learning process and ensuring you understand every step.
Turn time into mastery
On average, you retain 75% more of your learning if you take time to practice. Hands-on labs set you up for success to make those skills stick.