Bash Scripting - Conditionals
Which of the following is the correct syntax to check if file
data.txt exists AND is readable using logical operators inside [ ]?Which of the following is the correct syntax to check if file data.txt exists AND is readable using logical operators inside [ ]?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Identify AND operator inside [ ]
Inside[ ],-ameans AND, so use it to combine two conditions.Step 2: Check file existence and readability
-e data.txtchecks if file exists,-r data.txtchecks if readable. Combined with-ameans both must be true.Final Answer:
[ -e data.txt -a -r data.txt ] -> Option DQuick Check:
AND inside [ ] = -a [OK]
Quick Trick: Use -a for AND inside [ ] to combine conditions [OK]
Common Mistakes:
MISTAKES- Using -o instead of -a for AND
- Using && inside [ ]
- Mixing operators incorrectly
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