Quick Tip

Harness `cut` for Efficient Text Column Extraction

Challenge: You need to extract specific columns or fields from text files or command output, and you’re tired of manual parsing or complex `awk` scripts for simple tasks.

The Solution: Utilize the `cut` command to easily select and extract sections from each line of input.

# Example: Extract the first and third fields (space-delimited) from a file cat your_file.txt | cut -d ' ' -f 1,3 # Example: Extract characters from position 10 to 20 cat your_file.txt | cut -c 10-20 # Example: Extract the first field using a colon as a delimiter cat /etc/passwd | cut -d ':' -f 1

Why it works: `cut` is designed for simple, linear extraction. The -d option specifies the delimiter, and the -f option selects the desired fields. For character-based extraction, -c is used.

Pro-Tip: Combine `cut` with other commands like `sort` or `uniq` for powerful data manipulation. For instance, `cut -d ‘:’ -f 1 /etc/passwd | sort | uniq` will give you a sorted list of unique usernames.

Linux Tips & Tricks | © ngelinux.com | 4/30/2026