Bash Scripting - Text Processing in Scripts
What is the output of this command?
echo "abc123" | tr 'a-z' 'A-Z'
What is the output of this command?
medium📝 Command Output Q4 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the command
The command converts all lowercase letters to uppercase usingtr 'a-z' 'A-Z'.Step 2: Apply transformation to input
Input "abc123" becomes "ABC123" because digits remain unchanged.Final Answer:
ABC123 -> Option BQuick Check:
Lowercase to uppercase conversion = ABC123 [OK]
Quick Trick: Digits stay same; only letters change case [OK]
Common Mistakes:
MISTAKES- Expecting digits to change
- No change in output
- Mixing letter case incorrectly
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