Practical Linux Command Line 2.0 - Find Lines Containing a Pattern (grep)

The video tutorial explains how to find lines in a text file that match a specific pattern using commands. It introduces the 'grape' command to search for lines containing specific words, such as 'freedom', and discusses case sensitivity in searches. The tutorial also touches on using regular expressions for more advanced search capabilities, providing examples of how to list lines starting with specific characters or patterns.

What command is used to find lines in a file that contain a specific word?

• locate

• search

• find

• grep

How does the 'grep' command treat uppercase and lowercase letters by default?

• It ignores case differences

• It is case-sensitive

• It only matches lowercase

• It only matches uppercase

Which option allows 'grep' to ignore case differences when searching?

• -c

• -i

• -n

• -v

What is the purpose of using regular expressions with the 'grep' command?

• To count the number of lines in a file

• To find lines containing a specific word

• To search for lines starting with a specific pattern

• To list all files in a directory

What does the 'grep' command do when a regular expression is used?

• It counts the number of words in a file

• It finds lines starting with a specific pattern

• It searches for lines containing any word

• It lists all files in a directory