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Identify the error in this command:

medium📝 Debug Q6 of 15
Bash Scripting - Text Processing in Scripts
Identify the error in this command:
grep 'pattern' <<
AIncorrect grep syntax
BMissing quotes around the string after <<<
CHere string operator used incorrectly
DNo error, command is correct
Step-by-Step Solution
Solution:

  1. Step 1: Check here string syntax

    The here string operator <<< is used correctly; words after it are not subject to word splitting or pathname expansion.

  2. Step 2: Verify command execution

    The command executes successfully: grep receives "pattern\n" as input and outputs "pattern" since it matches.

  3. Final Answer:

    No error, command is correct -> Option D

  4. Quick Check:

    Here string works unquoted for simple literals [OK]
Quick Trick: Here strings do not require quotes for simple literal strings after <<< [OK]
Common Mistakes:
MISTAKES
  • Thinking quotes are mandatory after <<<
  • Confusing here string with operators that do word splitting
  • Expecting syntax error for unquoted simple strings

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