[other] Bash Menu Script

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http://ubuntuforums.org – HOMEWORK ASSIGNMENT I am creating a bash Menu script that would prompt a user to select options. Option 4 is for changing directory. I have accomplished this by using the following: change_directory () { read -p ' Please enter your directory :' dir cd "/$dir" But my question is, what if the user inputs a directory that isnt in the / path? How could I go from there? I have no clue in how to do that. So i need your help guys. thank you in advance (Hardware)