Replace 'bob' with 'Bob' in File and Write to newletter

D

The correct answer is D. sed 's/bob/Bob/g' letter > newletter

Explanation:

The sed command is a stream editor used to perform text transformations on an input stream (file or pipeline). The syntax of the sed command is sed [options] 'command' file(s).

In this case, we want to replace each occurrence of 'bob' in the file letter with 'Bob' and write the result to the file newletter.

The correct command is:

sed 's/bob/Bob/g' letter > newletter

Here's what each part of the command does:

• sed: invokes the stream editor.
• 's/bob/Bob/g': the command to replace every occurrence of 'bob' with 'Bob' in the file.
  • s: the substitute command tells sed to substitute one string for another.
  • /: delimits the search and replace strings.
  • bob: the search string to be replaced.
  • /: delimits the search string from the replacement string.
  • Bob: the replacement string to be substituted.
  • /: delimits the replacement string from the options.
  • g: the global option tells sed to replace all occurrences of the search string in each line, not just the first occurrence.
• letter: the name of the input file to be edited.
• >: redirects the output of the sed command to a file.
• newletter: the name of the output file to write the edited text to.

Therefore, the correct answer is D. sed 's/bob/Bob/g' letter > newletter