diff --git a/contrib/devtools/build-all.sh b/contrib/devtools/build-all.sh
new file mode 100755
--- /dev/null
+++ b/contrib/devtools/build-all.sh
@@ -0,0 +1,38 @@
+#!/bin/bash -e
+
+CURRENT_DATE=$(date +%Y-%m-%d)
+
+build() {
+  if [[ $1 ]]; then
+    echo "Running gitian build for $1..."
+    # Note the path to descriptors assumes vagrant was used.  These files are
+    # within the ABC repository normally.
+    ./bin/gbuild --commit bitcoin="${COMMIT}" --url bitcoin="${URL}" /vagrant/contrib/gitian-descriptors/gitian-$1.yml
+    if [ $? -ne 0 ]; then
+      return 1
+    fi
+
+    # Copy outputs to build directory since ./build/out is overwritten with
+    # each build.
+    OUTPUT_DIR="/vagrant/build/gitian/$CURRENT_DATE/$1"
+    mkdir -p $OUTPUT_DIR
+    cp -r ./build/out/* $OUTPUT_DIR
+    echo "Build completed for $1. See build/gitian/$1 for generated outputs."
+    return 0
+  fi
+  return 1
+}
+
+# Delete any *-res.yml files from older builds
+rm ./result/*
+
+build "osx"   || exit 1
+build "win"   || exit 1
+build "linux" || exit 1
+
+# Copy all the *-res.yml files to their respective directories
+# Note: ... || true; is used incase the files do not exist. The script will
+# continue without exiting prematurely.
+cp ./result/bitcoin-abc-*-osx-res.yml /vagrant/build/gitian/$CURRENT_DATE/osx || true
+cp ./result/bitcoin-abc-*-win-res.yml /vagrant/build/gitian/$CURRENT_DATE/win || true
+cp ./result/bitcoin-abc-*-linux-res.yml /vagrant/build/gitian/$CURRENT_DATE/linux || true
diff --git a/doc/gitian-building.md b/doc/gitian-building.md
--- a/doc/gitian-building.md
+++ b/doc/gitian-building.md
@@ -102,14 +102,7 @@
 ```bash
 URL=https://github.com/bitcoin-abc/bitcoin-abc.git
 COMMIT=v0.16.0 # or whatever release tag you wish
-
-# Note the path to descriptors assumes vagrant was used.  These files are within the ABC repository normally.
-./bin/gbuild --commit bitcoin=${COMMIT} --url bitcoin=${URL} /vagrant/contrib/gitian-descriptors/gitian-linux.yml
-# Note: If you plan on signing the binaries generated during this process, be
-# sure to copy them from ./build/out/ to /vagrant/gitian/<platform-name>
-# otherwise they will be overwritten by the next gbuild call.
-./bin/gbuild --commit bitcoin=${COMMIT} --url bitcoin=${URL} /vagrant/contrib/gitian-descriptors/gitian-win.yml
-./bin/gbuild --commit bitcoin=${COMMIT} --url bitcoin=${URL} /vagrant/contrib/gitian-descriptors/gitian-osx.yml
+/vagrant/contrib/devtools/build-all.sh
 ```
 
 Note on the OSX build: If you encounter an error about a missing MacOSX10.11.sdk.tar.gz, then follow these steps: