10 Daily Linux Questions and Answers Series (part 7)

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In this brief article, I present 10 essential Linux questions along with their answers.
This foundational knowledge is crucial for anyone seeking to master Linux.

Listing Files (ls command)

Q1: What is the ls command used for in Linux?
The ls command is used to list files and directories.

Q2: How do you list all files, including hidden ones?
ls -a

Q3: How can you display file details such as permissions, owner, size, and modification date?
ls -l

Q4: How do you list files in human-readable sizes?
ls -lh

Q5: How do you list files sorted by modification time?
ls -lt

Q6: How do you list only directories?
ls -d */

Q7: How do you list files recursively in all subdirectories?
ls -R

Q8: How do you list files sorted by size?
ls -lS

Q9: How do you differentiate between a file and a directory in ls output?
A directory has a d at the beginning of the permissions string (e.g., drwxr-xr-x).

Q10: How do you check inode numbers of files?
ls -i