Update destination directory with new files (if modified) using ant -


i'm facing problem ant "copy". here requirement: want sync 2 dirs(dir1 , dir2) want keep files/dirs present in dir2. aim want copy dir1 contents(if modified ) dir2 want keep additional files/dirs present in dir2.

i tried ant's sync task, trying keep both dirs in sync ie., deleting contents present in dir2. don't find flag disable feature:

<sync todir="dir2" failonerror="true" verbose="true">                              <fileset dir="dir1" excludes="*.svn" />  </sync>

i tried ant's copy "modified" selector, doing same: :(

<copy todir="dir2" failonerror="true">   <fileset dir="dir1" excludes="*.svn" >                                 <modified/> <!-- copies modified files -->   </fileset>

can 1 suggest, how can achieve requirement ant?

by default, ant copy task not overwrite files:

<copy todir="target/dir2" verbose="true" overwrite="false">   <fileset dir="src/dir1"/> </copy>

the copy task detect if file has changed.

the copy task not delete files, don't understand why second example (using modified selector) did not work.


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