[Solved] Given a file 'log.txt' with lines:1. Error: Disk full2. Warning: Low memory3. Error: File not foundWhat is the output of Select-String -Pattern '^Error' -Path 'log.txt'? | PowerShell

PowerShell - Regular Expressions

Given a file 'log.txt' with lines:
1. Error: Disk full
2. Warning: Low memory
3. Error: File not found
What is the output of Select-String -Pattern '^Error' -Path 'log.txt'?

ALines 1 and 3 with their content

BOnly line 2

CAll lines containing 'Error' anywhere

DNo output because pattern is incorrect

Step-by-Step Solution

Solution:

Step 1: Understand '^Error' matches lines starting with 'Error'
Lines 1 and 3 start with 'Error', line 2 does not.
Step 2: Select-String outputs matching lines with line numbers
So lines 1 and 3 with their content are output.
Final Answer:
Lines 1 and 3 with their content -> Option A
Quick Check:
Regex '^Error' matches line start only [OK]

Quick Trick: Use ^ to match start of line, output includes line numbers [OK]

Common Mistakes:

Assuming it matches 'Error' anywhere in line
Expecting line 2 to match
Thinking no output due to pattern error

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More PowerShell Quizzes

Given a file 'log.txt' with lines:

Step 1: Understand '^Error' matches lines starting with 'Error'

Step 2: Select-String outputs matching lines with line numbers

Final Answer:

Quick Check:

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