Mastering Unix Command Line

What command is used to list files in a directory?

• ls

• dir

• list

• show

How do you change the current directory in Unix?

• Use the 'cd' command followed by the directory path.

• Use the 'mv' command to change directories.

• Use 'ls' to navigate to a different directory.

• Type 'change dir' followed by the path.

Which command is used to display the contents of a file?

• show

• display

• list

• cat

How can you find the current working directory?

• Use 'pwd' in Unix/Linux or 'cd' in Windows Command Prompt.

• Type 'dir' in Windows Explorer

• Use 'ls' in Unix/Linux

• Check the system settings for the path

What does the 'grep' command do?

• The 'grep' command compiles code into executable files.

• The 'grep' command searches for patterns in files and outputs matching lines.

• The 'grep' command manages system processes and services.

• The 'grep' command formats text documents for printing.

How can you view the first 10 lines of a file?

• head -n 10 filename

• less filename | head -n 10

• cat filename | head

• tail -n 10 filename

What command is used to search for a specific string in files?

• search

• locate

• grep

• find

Which command lists files in long format, sorted by modification time, with human-readable sizes?

• ls -lhS

• ls -lht

• ls -lt

• ls -lh

How do you create a new directory from the command line?

• mkdir

• touch

• nano

• rm

What is the difference between ls and pwd?

• Both list files in the directory

• ls prints working directory, pwd lists files

• ls lists files, pwd shows the current directory

• They do the same thing