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Find the error in this sed command:

medium📝 Debug Q7 of 15
Bash Scripting - Text Processing in Scripts
Find the error in this sed command:
sed s/foo/bar/g file.txt
AFile name should come before the sed expression
BMissing quotes around the substitution expression
CWrong delimiter used in substitution
DNo error, command is valid
Step-by-Step Solution
Solution:

  1. Step 1: Check for proper quoting in sed commands

    sed expressions usually require quotes to prevent shell interpretation.

  2. Step 2: Identify missing quotes in the command

    The command lacks quotes around s/foo/bar/g, which can cause errors or unexpected behavior.

  3. Final Answer:

    Missing quotes around the substitution expression -> Option B

  4. Quick Check:

    Always quote sed expressions to avoid shell issues [OK]
Quick Trick: Quote sed expressions to avoid shell parsing errors [OK]
Common Mistakes:
MISTAKES
  • Omitting quotes around sed commands
  • Assuming sed works without quotes
  • Confusing delimiter errors with quoting

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