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
  1. 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
  1. 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
  1. 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
  1. To view access times, we use -l ("long listing") and-u` (access time).
    ls -lu ~/Practice/Test/sos_commands/networking/netstat_-W_-neopa

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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