- echo "Downloading mercurial snapshot"
- wget http://www.selenic.com/mercurial/mercurial-snapshot.tar.gz
+ if [ -f mercurial-snapshot.tar.gz ] ; then
+ echo "mercurial-snapshot.tar.gz exists already, skipping download."
+ else
+ echo "Downloading mercurial snapshot"
+ wget http://www.selenic.com/mercurial/mercurial-snapshot.tar.gz
+ fi
+ echo "Unpacking mercurial-snapshot.tar.gz"