Linux Text Processing & Editors 2

Question 1

What does `cut -d: -f1 /etc/passwd` do?

Accepted Answer

Extracts the first colon-delimited field from each line

Answer

Removes the first field from /etc/passwd

Answer

Counts the number of colons in /etc/passwd

Answer

Displays only lines that start with a colon

Question 2

Which command translates all lowercase letters to uppercase from stdin?

Accepted Answer

tr 'a-z' 'A-Z'

Answer

case upper

Answer

upper file

Answer

convert -u file

Question 3

What does `uniq -c` do?

Accepted Answer

Prefixes each line with the count of consecutive occurrences

Answer

Removes all duplicate lines from the input

Answer

Shows only unique lines with no adjacent duplicates

Answer

Checks if an entire file has unique content

Question 4

What does the `tee` command do?

Accepted Answer

Reads from stdin and writes to both stdout and a file simultaneously

Answer

Compresses output into a tarball

Answer

Splits a file into two equal halves

Answer

Creates a hard link to a file

Question 5

Which command shows the differences between two text files line by line?

Accepted Answer

diff

Answer

cmp

Answer

compare

Answer

delta

Question 6

What does `sed -n '5,10p'` do when applied to a file?

Accepted Answer

Prints only lines 5 through 10 to stdout

Answer

Deletes lines 5 through 10 from the file

Answer

Substitutes text only between lines 5 and 10

Answer

Counts the lines between 5 and 10

Question 7

What does the `paste` command do?

Accepted Answer

Merges lines from multiple files side by side separated by tabs

Answer

Appends one file's content to the end of another

Answer

Copies clipboard content into a file

Answer

Concatenates files end-to-end like cat