Bash Scripting - Conditionals
Which of the following is the correct syntax to check if file
file.txt exists AND is readable in bash?Which of the following is the correct syntax to check if file file.txt exists AND is readable in bash?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the condition to check
We want to check iffile.txtexists AND is readable, so both conditions must be true.Step 2: Choose correct logical operator and syntax
Inside [ ],-ameans AND, so[ -e file.txt -a -r file.txt ]is correct. Using-omeans OR, which is wrong here. Using&&inside [ ] is invalid syntax.Final Answer:
[ -e file.txt -a -r file.txt ] -> Option CQuick Check:
AND check uses -a inside [ ] [OK]
Quick Trick: Use -a for AND inside [ ], not && or -o for AND [OK]
Common Mistakes:
MISTAKES- Using -o instead of -a for AND
- Using && inside [ ] which causes syntax error
- Negating conditions incorrectly with !
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