Linux CLI - File and Directory Operations
You want to create empty files for each month abbreviation (Jan, Feb, Mar) with .log extension. Which command is best?
You want to create empty files for each month abbreviation (Jan, Feb, Mar) with .log extension. Which command is best?
hard📝 Application Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Use brace expansion for multiple specific names
Brace expansion with comma-separated values creates multiple files with given names and extensions.Step 2: Compare options
touch {Jan,Feb,Mar}.log correctly creates Jan.log, Feb.log, Mar.log. touch Jan.log,Feb.log,Mar.log uses commas which is invalid. touch Jan Feb Mar.log creates files Jan, Feb, and a file named Mar.log. touch Jan-Feb-Mar.log creates one file named Jan-Feb-Mar.log.Final Answer:
touch {Jan,Feb,Mar}.log -> Option AQuick Check:
Brace expansion with commas creates multiple named files = C [OK]
Quick Trick: Use {a,b,c} to create multiple specific files quickly [OK]
Common Mistakes:
MISTAKES- Listing files without extensions
- Creating one combined filename
- Using commas instead of spaces
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