A systems administrator is working on configuration changes and needs to replace a hostname in a specific file. Which of the following commands should the administrator use to complete this task?

Question

Options

• Acut. -d oldhostname /etc/configuration.file | vi newhost.name
• Bsed -i 's/oldhostname/newhostname/' /etc/configuration.file
• Ccat /etc/configuration.file | grep oldhostname > newhost.name
• Dgrep oldhostname /etc/configuration.file | awk '{print $1 newhostname}'

• A
  3% (1)
• B
  90% (28)
• D
  6% (2)

Explanation

This command performs an in-place substitution, replacing the specified hostname directly within the file, which is the correct and efficient method for modifying configuration values without creating intermediate files.

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