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From glenn opdycke-hansen <glenn...@gmail.com>
Subject Re: empty the file
Date Tue, 16 Mar 2010 02:25:21 GMT
Can echo task work here?  Below is a target to init the file and one to
clear the file. (not quite, it writes 1 byte to the file)

<project name="clear">
<target name="init">
<echo file="file.txt">
first line
second line
third
</echo>
</target>

<target name="clear">
<echo file="file.txt"/>
</target>
</project>

--glenn


On Mon, Mar 15, 2010 at 19:55, Antoine Levy-Lambert <antoine@gmx.de> wrote:

> Hi,
>
> redirection is a feature of the shell, not of cat.
>
> You could use
> <delete file="/var/log/testmsg" quiet="true"/>
> <touch file="/var/log/testmsg"/>
>
> or
>
>        <exec executable="sh" searchpath="bin">
>         <arg value="cat"/>
>          <arg value="/dev/null"/>
>         <arg value=">"/>
>         <arg value="/var/log/testmesg"/>
>        </exec>
>
>
>
> Regards,
>
> Antoine
>
>
> dr_jym wrote:
> > I am using Ant 1.7.0 not Ant 1.7.1 that has "truncate" task.
> > I have to empty the file using Ant 1.7.0. on Linux - file name is
> > /var/log/testmesg, and it has read/write permissions for everybody.
> > I tried the following:
> >
> > <ant default="truncate">
> >       <target name="truncate">
> >         <exec executable="cat" searchpath="bin">
> >          <arg value="/dev/null"/>
> >          <arg value=">"/>
> >          <arg value="/var/log/testmesg"/>
> >         </exec>
> >       </target>
> >     </ant>
> >
> > and this does not empty the file. What am I doing wrong, or maybe there
> is
> > another was to clean up the file?
> > Thanks.
> >
>
>
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