Bash Scripting - String Operations
Which of the following bash commands correctly outputs the length of the string stored in variable
message?Which of the following bash commands correctly outputs the length of the string stored in variable message?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Recall bash syntax for string length
In bash,${#var}returns the length of the string invar.Step 2: Evaluate options
Only echo ${#message} uses the correct syntax. Options B, C, and D are invalid bash syntax for string length.Final Answer:
echo ${#message} -> Option BQuick Check:
Test withmessage="test"outputs 4 [OK]
Quick Trick: Use echo ${#var} to get string length [OK]
Common Mistakes:
MISTAKES- Using dot notation like $var.length which is invalid in bash
- Trying to call length() as a function
- Misusing parameter expansion syntax
Master "String Operations" in Bash Scripting
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore Bash Scripting Quizzes