fix realpath/readlink for issue #6

dotdrop.sh

@@ -2,8 +2,19 @@
 # author: deadc0de6 (https://github.com/deadc0de6)
 # Copyright (c) 2017, deadc0de6
 
+# check for readlink/realpath presence
+# https://github.com/deadc0de6/dotdrop/issues/6
+rl="readlink -f"
+${rl} >/dev/null 2>&1
+if [ "$?" != "0" ]; then
+  rl="realpath"
+  hash ${rl}
+  [ "$?" != "0" ] && echo "\"${rl}\" not found !" && exit 1
+fi
+
+# setup variables
 args="$@"
-cur=`dirname $(readlink -f $0)`
+cur=`dirname $(${rl} ${0})`
 opwd=`pwd`
 bin="${cur}/dotdrop/dotdrop.py"
 cfg="${cur}/config.yaml"