You want to list only directories inside /usr/bin, including hidden ones, without showing files. Which command achieves this?

hard📝 Application Q9 of 15

Linux CLI - Navigating the File System

Als -d /usr/bin/*

Bls -l /usr/bin | grep '^d'

Cls -a /usr/bin | grep '^d'

Dls -ld /usr/bin/.*

Step-by-Step Solution

Solution:

Step 1: Understand how to list directories only
ls -l shows file types in first column; directories start with 'd'.
Step 2: Filter output to directories including hidden
Piping to grep '^d' filters only directory lines. Hidden directories appear with -a, but ls -l without -a misses hidden ones.
Step 3: Check options
ls -l /usr/bin | grep '^d' (ls -l /usr/bin | grep '^d') lists directories with details by filtering lines starting with 'd'. It misses hidden directories (add -a for those), but correctly excludes files among the options.
Final Answer:
ls -l /usr/bin | grep '^d' -> Option B
Quick Check:
Filter directories by grep '^d' after ls -l [OK]

Quick Trick: Use ls -l and grep '^d' to list directories only [OK]

Common Mistakes:

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