Content Comparison

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• Environment Variables: Define the behavior of the environment: Try:

  • echo $HOME

  • echo $USER

  • echo $SHELL

  • echo $PATH

• File searching/manipulation

  • sed: stream editor for filtering and transforming text

    • $sed $ sed 's/windows/linux/2' fav_os.txt

    • Above command would substitute the 2nd instance of string ‘windows’ in each line of the fav_os.txt file with string ‘linux’, but leave the any following instances of ‘windows’ alone in the file.

  • gawk: pattern scanning and processing language

    • Scan specifying field separators, assign variables, specif source type, etc.

• Ability to update file permission and ownership: chmod/chown

  • User-case of sharing files/folders.

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