103.7 Search Text Files Using Regular Expressions LPIC-1 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   How do you match a literal dot (.) in a regular expression?

   • A.
   • B\.
   • C\.\
   • D[.]
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2. 2foundation · easy

   Which command is equivalent to `egrep`?

   • Agrep -F
   • Bgrep -E
   • Cgrep -v
   • Dgrep -c
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4. 3foundation · easy

   Which command finds all lines in file.txt that start with "ERROR" (case-insensitive)?

   • Agrep 'ERROR$' file.txt
   • Bgrep -i '^ERROR' file.txt
   • Cgrep '^ERROR' file.txt
   • Dgrep -v '^ERROR' file.txt
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5. 4foundation · easy

   Which awk command prints lines that contain the word "warning"?

   • Aawk '/warning/{print $0}' file.txt
   • Bawk '/warning/' file.txt
   • Cawk '{print /warning/}' file.txt
   • Dawk 'print /warning/' file.txt
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6. 5foundation · easy

   In an awk program, which part specifies the action to perform on each matching line?

   • AThe action
   • BThe END block
   • CThe pattern
   • DThe BEGIN block
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