Bash Scripting - Variables
Which of the following is the correct syntax to print the exit status of the last command in a bash script?
Which of the following is the correct syntax to print the exit status of the last command in a bash script?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Recall the special variable for exit status
$?holds the exit status of the last executed command.Step 2: Confirm the correct echo syntax
Usingecho $?prints that exit status correctly.Final Answer:
echo $? prints last command's exit status -> Option DQuick Check:
$?= Last command exit status [OK]
Quick Trick: Use $? to check last command success or failure [OK]
Common Mistakes:
MISTAKES- Using $0 or $$ instead of $?
- Forgetting to echo the variable
- Confusing $# with exit status
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