Re: unix redirection - how do you specify input files?

[Bill Burton]

Hello,

Steve Dews wrote:
> 
> Hello,
> 
>     Here's what I'm trying to do:
> 
>            $ sed -e 's/bad/good/' < oldfile > newfile
> 
>     Here's what I've got in Ant:
> 
>            <exec executable="sed" output="./newfile">
>              <arg>-e</arg>
>              <arg>'s/bad/good/'</arg>
>            </exec>
> 
>     Where does the input file belong in the Ant syntax?
>     As an <arg>?  That doesn't seem to work.

The real question is, where does the input file belong in the sed syntax? 
Sed will take input either from stdin or a file.  So just specify the file
after the pattern:
        <exec executable="sed" output="newfile">
          <arg value="-e"/>
          <arg value="s/bad/good/"/>
          <arg value="oldfile"/>
        </exec

However, you may find it easier to use Ant's <replace> task.  For
instance:
        <copy file="oldfile" tofile="newfile"/>
        <replace file="newfile" token="bad" value="good"/>

-Bill Burton