Bash Scripting - Variables
What will be the output of this script if run as
./script.sh apple banana?echo "$0" echo "$1" echo "$#" echo "$@"
What will be the output of this script if run as ./script.sh apple banana?
medium📝 Command Output Q4 of 15
Step-by-Step Solution
Solution:
Step 1: Understand each variable's value
$0is the script name with path: './script.sh',$1is first argument 'apple',$#is number of arguments '2',$@is all arguments 'apple banana'.Step 2: Match output lines with options
./script.sh apple 2 apple banana matches exactly the expected output lines.Final Answer:
./script.sh apple 2 apple banana -> Option BQuick Check:
$0=script name,$1=first arg,$#=arg count,$@=all args [OK]
Quick Trick: Remember $0 is script name, $1 first arg, $# count, $@ all args [OK]
Common Mistakes:
MISTAKES- Confusing $0 with first argument
- Mixing $1 and $@ outputs
- Miscounting $# arguments
Master "Variables" in Bash Scripting
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