Apprentice Level

Using Directories and Listing Files

30 minutes

4 Learning Objectives

About this Hands-on Lab

In this hands-on lab, we will practice moving through directories and listing files. Becoming comfortable changing directories, and listing files is a necessary step in moving through a Linux file system.

Learning Objectives

Successfully complete this lab by achieving the following learning objectives:

Determine Which File Is the Oldest

To list the directory and sort by date, we use -l for "long listing", -A for "almost all", and -t for "sort by time".
```
ls -lAt ~/Practice/Test/var/log/
```

Determine Which File Is the Largest

To list the directory and sort by file size, we use -l ("long listing") and -S ("sort by file size").
```
ls -lS ~/Practice/Test/var/log/
```

Determine When the File `~/Practice/Test/sos_commands/networking/netstat_-W_-neopa` Was Last Modified

We use a simple -l for "long listing" to view the last modified time and date.
```
ls -l ~/Practice/Test/sos_commands/networking/netstat_-W_-neopa
```

Determine When the File `~/Practice/Test/sos_commands/networking/netstat_-W_-neopa` Was Last Accessed

To view access times, we use -l ("long listing") and-u` (access time).
```
ls -lu ~/Practice/Test/sos_commands/networking/netstat_-W_-neopa
```

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Additional Resources

Within cloud_user's home directory, there is a folder named Practice. Within this folder, there is a directory named Test. You will need to view the contents of the Test directory to answer the following questions:

What is the oldest file located in ~/Practice/Test/var/log/ ?
What is the largest file in ~/Practice/Test/var/log/ ?
When was the file ~/Practice/Test/sos_commands/networking/netstat_-W_-neopa last modified?
When was the file ~/Practice/Test/sos_commands/networking/netstat_-W_-neopa last accessed?

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Learn from anywhere with unlimited access to certification courses and deep dives on AWS, Azure, GCP, Linux, and so much more.

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limited

Pop quiz, hot shot

Quickly check your knowledge on a variety of topics and know where to brush up with short quizzes.

ACG Original Series

Keep up with the cloud

Stay up-to-date on all things cloud with weekly and monthly videos about the latest developments in AWS, Azure, GCP, and Kubernetes.

Community Forums

Cloud with friends

Get the help you need, when you need it, from industry experts and other learners in the community — and help others in turn.

Learning Paths

Go from novice to guru in your chose specialty

Not sure how to proceed? We’ll guide you through the exact skills you need to gain to progress from novice to guru across a variety of cloud specialties, including Architect, Security, and DevOps.

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Keep ACG in your pocket

Learn cloud from anywhere with our mobile apps for iOS and Android.

Mobile Offline Mode

Learn off the grid

No internet connection? No problem. Download courses for offline access with our app for iOS and Android.

Unlimited Hands-on Labs

Get your hands cloudy

Learn by doing with guided labs based on real-world scenarios in a secure, risk-free environment. Build new skills in as little as 15 minutes.

Practice Exams

Put your skills to the test

Prepare for your certs with practice exams that mimic the real thing. Plus, get personalized pointers on how to improve your score.

Interactive Diagrams

Study aids on demand

Snag clickable, PDF versions of core concepts to revisit later. Our diagrams make great study aids, help build retention, and can act as handy cheat sheets for a quick refresher down the road.

Video Transcripts & Captions

For the record

Read along when sound isn’t an option and skip furiously scribbling notes. Our transcripts and captions are also fully searchable, making it easy to find exactly what you’re looking for.

Records of Completion

Achievement unlocked

Earn a little something when you complete courses. Records of completion make it easy to mark and showcase your progress.

Email Support

Cloud on demand

Spin up pre-configured, auto-provisioned servers in just a few clicks. Cloud along with courses, practice whenever you feel like it, and never worry about a surprise cloud bill.

Cloud Playground - Instant Terminal

SSH on demand

Quickly launch a secure, in-browser SSH terminal into any instance on any provider – even behind a firewall.

Cloud Playground - Sandboxes

Personal Plus Only

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About this Hands-on Lab

Learning Objectives

Additional Resources

Plans & Pricing

Choosing is the first step

Business Basic

Business Plus

Learning without limits

Learn faster by doing

Take your teams from novice to guru

Cloud on demand

SSH on demand

Learn by doing

Keep up with the cloud

Put skills to the test

Pop quiz, hot shot

Cloud with friends

Keep ACG in your pocket

Learn off the grid

Achievement unlocked

For the record

Study aids on demand

We’re here to help

One dashboard to rule them all

Know where you stand

Get to the cloud faster

Learn better together

Skills at a glance

Easy organization by teams

Invite 10 to 10,000 or more

Connect all the dots

Get your bits

We’ve got your back

We’ll show you the ropes

Plans & Pricing

Choosing is the first step

Free

Personal Basic

Personal Plus

Learn without limits

Pop quiz, hot shot

Keep up with the cloud

Cloud with friends

Go from novice to guru in your chose specialty

Keep ACG in your pocket

Learn off the grid

Get your hands cloudy

Put your skills to the test

Study aids on demand

For the record

Achievement unlocked

We’re here to help

Cloud on demand

SSH on demand

Learn by doing

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