diff --git a/pmd/bin/cpd.sh b/pmd/bin/cpd.sh
index 8e78e93d7b..eec53e3a06 100644
--- a/pmd/bin/cpd.sh
+++ b/pmd/bin/cpd.sh
@@ -20,6 +20,11 @@ if [ -z "$1" ]; then
 				exit 1
 fi
 
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+esac
 
 SCRIPT_DIR=`dirname $0`
 CWD="$PWD"
@@ -27,6 +32,14 @@ CWD="$PWD"
 cd "$SCRIPT_DIR/../lib"
 LIB_DIR=`pwd -P`
 
+# If cygwin, convert to Unix form before manipulating
+if $cygwin ; then
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+ [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
 classpath=$CLASSPATH
 
 build_dir="$SCRIPT_DIR/../build"
@@ -62,4 +75,11 @@ esac
 
 # echo "CLASSPATH: $classpath"
 
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  JAVA_HOME=`cygpath --windows "$JAVA_HOME"`
+  classpath=`cygpath --path --windows "$classpath"`
+  DIRECTORY=`cygpath --windows "$DIRECTORY"`
+fi
+
 java $HEAPSIZE -cp $classpath net.sourceforge.pmd.cpd.CPD --minimum-tokens $MINIMUM_TOKENS --files $DIRECTORY --language $LANGUAGE
diff --git a/pmd/bin/designer.sh b/pmd/bin/designer.sh
old mode 100755
new mode 100644
index fccbb65859..076007e338
--- a/pmd/bin/designer.sh
+++ b/pmd/bin/designer.sh
@@ -1,11 +1,25 @@
 #!/bin/bash
 
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+esac
+
 SCRIPT_DIR=`dirname $0`
 CWD="$PWD"
 
 cd "$SCRIPT_DIR/../lib"
 LIB_DIR=`pwd -P`
 
+# If cygwin, convert to Unix form before manipulating
+if $cygwin ; then
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+ [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
 classpath=$CLASSPATH
 
 build_dir="$SCRIPT_DIR/../build"
@@ -31,4 +45,9 @@ RULESETFILES="$@"
 
 # echo "CLASSPATH: $classpath"
 
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  classpath=`cygpath --path --windows "$classpath"`
+fi
+
 java -cp $classpath net.sourceforge.pmd.util.designer.Designer
diff --git a/pmd/bin/pmd.sh b/pmd/bin/pmd.sh
old mode 100755
new mode 100644
index 63fc814f9e..67006ade61
--- a/pmd/bin/pmd.sh
+++ b/pmd/bin/pmd.sh
@@ -7,12 +7,26 @@ if [ -z "$3" ]; then
     exit 1
 fi
 
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+esac
+
 SCRIPT_DIR=`dirname $0`
 CWD="$PWD"
 
 cd "$SCRIPT_DIR/../lib"
 LIB_DIR=`pwd -P`
 
+# If cygwin, convert to Unix form before manipulating
+if $cygwin ; then
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+ [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
 classpath=$CLASSPATH
 
 build_dir="$SCRIPT_DIR/../build"
@@ -38,4 +52,11 @@ RULESETFILES="$@"
 
 # echo "CLASSPATH: $classpath"
 
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  JAVA_HOME=`cygpath --windows "$JAVA_HOME"`
+  classpath=`cygpath --path --windows "$classpath"`
+  FILE=`cygpath --windows "$FILE"`
+fi
+
 java -Xmx512m -cp $classpath net.sourceforge.pmd.PMD $FILE $FORMAT $RULESETFILES
diff --git a/pmd/etc/changelog.txt b/pmd/etc/changelog.txt
index 56bb4912e4..c01f194bce 100644
--- a/pmd/etc/changelog.txt
+++ b/pmd/etc/changelog.txt
@@ -8,6 +8,7 @@ Update RuleSetWriter to handle non-Apache TRAX implementations, add an option to
 bin and java14/bin scripts:
 	retroweaver version was not correct in java14/bin scripts
 	support for extra languages in cpd.sh
+	standard unix scripts can be used with cygwin
 
 March 25, 2008 - 4.2:
 
diff --git a/pmd/java14/bin/cpd.sh b/pmd/java14/bin/cpd.sh
index 1ee8a28833..c64031f70f 100644
--- a/pmd/java14/bin/cpd.sh
+++ b/pmd/java14/bin/cpd.sh
@@ -24,6 +24,12 @@ fi
 SCRIPT_DIR=`dirname $0`
 CWD="$PWD"
 
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+esac
+
 cd "$SCRIPT_DIR/../../lib"
 LIB_DIR=`pwd -P`
 
@@ -31,6 +37,14 @@ cd "$CWD"
 cd "$SCRIPT_DIR/../lib"
 RW_LIB_DIR=`pwd -P`
 
+# If cygwin, convert to Unix form before manipulating
+if $cygwin ; then
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+ [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
 classpath=$CLASSPATH
 
 for jarfile in `ls $RW_LIB_DIR/*.jar`; do
@@ -70,4 +84,11 @@ esac
 
 # echo "CLASSPATH: $classpath"
 
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  JAVA_HOME=`cygpath --windows "$JAVA_HOME"`
+  classpath=`cygpath --path --windows "$classpath"`
+  DIRECTORY=`cygpath --windows "$DIRECTORY"`
+fi
+
 java $HEAPSIZE -cp $classpath net.sourceforge.pmd.cpd.CPD --minimum-tokens $MINIMUM_TOKENS --files $DIRECTORY --language $LANGUAGE
diff --git a/pmd/java14/bin/designer.sh b/pmd/java14/bin/designer.sh
index a3b2b5151c..dfa9f548c2 100644
--- a/pmd/java14/bin/designer.sh
+++ b/pmd/java14/bin/designer.sh
@@ -1,5 +1,11 @@
 #!/bin/bash
 
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+esac
+
 SCRIPT_DIR=`dirname $0`
 CWD="$PWD"
 
@@ -10,6 +16,14 @@ cd "$CWD"
 cd "$SCRIPT_DIR/../lib"
 RW_LIB_DIR=`pwd -P`
 
+# If cygwin, convert to Unix form before manipulating
+if $cygwin ; then
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+ [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
 classpath=$CLASSPATH
 
 for jarfile in `ls $RW_LIB_DIR/*.jar`; do
@@ -39,4 +53,9 @@ RULESETFILES="$@"
 
 # echo "CLASSPATH: $classpath"
 
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  classpath=`cygpath --path --windows "$classpath"`
+fi
+
 java -cp $classpath net.sourceforge.pmd.util.designer.Designer
diff --git a/pmd/java14/bin/pmd.sh b/pmd/java14/bin/pmd.sh
index 159f9c4498..44d2af51ff 100644
--- a/pmd/java14/bin/pmd.sh
+++ b/pmd/java14/bin/pmd.sh
@@ -7,6 +7,12 @@ if [ -z "$3" ]; then
     exit 1
 fi
 
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+esac
+
 SCRIPT_DIR=`dirname $0`
 CWD="$PWD"
 
@@ -17,6 +23,14 @@ cd "$CWD"
 cd "$SCRIPT_DIR/../lib"
 RW_LIB_DIR=`pwd -P`
 
+# If cygwin, convert to Unix form before manipulating
+if $cygwin ; then
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+ [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
 classpath=$CLASSPATH
 
 for jarfile in `ls $RW_LIB_DIR/*.jar`; do
@@ -46,4 +60,11 @@ RULESETFILES="$@"
 
 # echo "CLASSPATH: $classpath"
 
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  JAVA_HOME=`cygpath --windows "$JAVA_HOME"`
+  classpath=`cygpath --path --windows "$classpath"`
+  FILE=`cygpath --windows "$FILE"`
+fi
+
 java -Xmx512m -cp $classpath net.sourceforge.pmd.PMD $FILE $FORMAT $RULESETFILES