Bash Scripting - String Operations
How can you get the length of the first word in a string variable
line="hello world" using bash string length?How can you get the length of the first word in a string variable line="hello world" using bash string length?
hard🚀 Application Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Extract first word using parameter expansion
The expression${line%% *}removes longest match of space and after, leaving first word.Step 2: Use ${#...} to get length of extracted word
Combining,${#line%% *}gives length of first word.Final Answer:
echo ${#line%% *} -> Option DQuick Check:
Use %% to trim after space, then get length [OK]
Quick Trick: Use ${#var%% *} to get length of first word [OK]
Common Mistakes:
MISTAKES- Using # or % incorrectly for word extraction
- Getting length of whole string instead of first word
- Confusing single and double % operators
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