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Exclamation marks in echos (shell scripts)

  • 28-07-2014 02:17PM
    #1
    veryangryman
    Registered Users, Registered Users 2 Posts: 5,750 ✭✭✭


    Hi im trying to do the following

    temp=tempFile.$$
    touch $tempFile
    echo "<!DOCTYPE ThisCode PUBLIC "-//company//DTD ThisCode" >> $temp


    But the echo gives this error

    bash: !DOCTYPE: event not found


    How do i make it do the echo literally?


Comments

  • #2
    Skrynesaver
    Registered Users, Registered Users 2 Posts: 1,110 ✭✭✭Skrynesaver


    Either slash escape the exclamation mark 
    echo "<\!DOCTYPE.."
    or single quote the text to prevent shell interpolation


  • #3
    daymobrew
    Registered Users, Registered Users 2 Posts: 6,636 ✭✭✭daymobrew


    Skrynesaver wrote: »
    or single quote the text to prevent shell interpolation
    +1 on single quotes - shell doesn't mess with your text. And copy/pasting from other sources doesn't need escaping.


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