diff --git a/doc/decision-tree-widget/package.json b/doc/decision-tree-widget/package.json
index 595f30c559..98414fbca2 100644
--- a/doc/decision-tree-widget/package.json
+++ b/doc/decision-tree-widget/package.json
@@ -3,12 +3,12 @@
   "version": "1.0.0",
   "description": "Interactive widget for a decision tree to assist choosing an RxJS operator",
   "scripts": {
-    "yaml2json": "rm -f src/tree.json && node tools/yaml2json tree.yml ./src/tree.json",
-    "prebrowserify": "mkdir -p dist",
+    "yaml2json": "shx rm -f src/tree.json && node tools/yaml2json tree.yml ./src/tree.json",
+    "prebrowserify": "shx mkdir -p dist",
     "browserify": "browserify src/main.js -t babelify --outfile dist/decision-tree-widget.js",
     "uglify": "uglifyjs dist/decision-tree-widget.js -o dist/decision-tree-widget.min.js",
     "build": "npm install && npm run yaml2json && npm run browserify && npm run uglify",
-    "postbuild": "rm -f src/tree.json"
+    "postbuild": "shx rm -f src/tree.json"
   },
   "dependencies": {
     "hyperscript-helpers": "^2.1.0",
@@ -19,6 +19,7 @@
     "babel-plugin-transform-object-rest-spread": "^6.5.0",
     "babel-preset-es2015": "^6.5.0",
     "babelify": "^7.2.0",
+    "shx": "^0.1.1",
     "browserify": "^13.0.0",
     "uglify-js": "^2.6.2"
   }
diff --git a/package.json b/package.json
index 2a74b05de5..831e860caf 100644
--- a/package.json
+++ b/package.json
@@ -54,28 +54,28 @@
     "build_es6": "npm-run-all clean_dist_es6 copy_src_es6 compile_dist_es6",
     "build_es6_for_docs": "npm-run-all clean_dist_es6 copy_src_es6 compile_dist_es6_for_docs",
     "build_closure_core": "java -jar ./node_modules/google-closure-compiler/compiler.jar --js ./dist/global/Rx.umd.js --language_in ECMASCRIPT5 --create_source_map ./dist/global/Rx.umd.min.js.map --js_output_file ./dist/global/Rx.umd.min.js",
-    "build_global": "rm -rf ./dist/global && mkdirp ./dist/global && node tools/make-umd-bundle.js && node tools/make-system-bundle.js && npm-run-all build_closure_core",
+    "build_global": "shx rm -rf ./dist/global && mkdirp ./dist/global && node tools/make-umd-bundle.js && node tools/make-system-bundle.js && npm-run-all build_closure_core",
     "build_perf": "webdriver-manager update && npm-run-all build_cjs build_global perf",
-    "build_test": "rm -rf ./dist/ && npm-run-all lint build_cjs clean_spec build_spec test_mocha",
-    "build_cover": "rm -rf ./dist/ && npm-run-all lint build_cjs build_spec cover",
+    "build_test": "shx rm -rf ./dist/ && npm-run-all lint build_cjs clean_spec build_spec test_mocha",
+    "build_cover": "shx rm -rf ./dist/ && npm-run-all lint build_cjs build_spec cover",
     "build_docs": "npm-run-all build_es6_for_docs build_global build_spec tests2png decision_tree_widget && esdoc -c esdoc.json",
     "build_spec": "tsc --project ./spec --pretty",
     "build_spec_browser": "webpack --config spec/support/webpack.mocha.config.js",
     "check_circular_dependencies": "madge ./dist/cjs --circular",
-    "clean_spec": "rm -rf spec-js",
-    "clean_dist_amd": "rm -rf ./dist/amd",
-    "clean_dist_cjs": "rm -rf ./dist/cjs",
-    "clean_dist_es6": "rm -rf ./dist/es6",
-    "copy_src_amd": "mkdirp ./dist/amd/src && cp -r ./src/* ./dist/amd/src",
-    "copy_src_cjs": "mkdirp ./dist/cjs/src && cp -r ./src/* ./dist/cjs/src",
-    "copy_src_es6": "mkdirp ./dist/es6/src && cp -r ./src/* ./dist/es6/src",
+    "clean_spec": "shx rm -rf spec-js",
+    "clean_dist_amd": "shx rm -rf ./dist/amd",
+    "clean_dist_cjs": "shx rm -rf ./dist/cjs",
+    "clean_dist_es6": "shx rm -rf ./dist/es6",
+    "copy_src_amd": "mkdirp ./dist/amd/src && shx cp -r ./src/* ./dist/amd/src",
+    "copy_src_cjs": "mkdirp ./dist/cjs/src && shx cp -r ./src/* ./dist/cjs/src",
+    "copy_src_es6": "mkdirp ./dist/es6/src && shx cp -r ./src/* ./dist/es6/src",
     "commit": "git-cz",
     "compile_dist_amd": "tsc typings/main/ambient/es6-shim/index.d.ts ./dist/amd/src/Rx.ts ./dist/amd/src/add/observable/of.ts                             -m amd      --sourceMap --outDir ./dist/amd --target ES5    --diagnostics --pretty --noImplicitAny --suppressImplicitAnyIndexErrors --moduleResolution node",
     "compile_dist_cjs": "tsc typings/main/ambient/es6-shim/index.d.ts ./dist/cjs/src/Rx.ts ./dist/cjs/src/add/observable/of.ts                             -m commonjs --sourceMap --outDir ./dist/cjs --target ES5 -d --diagnostics --pretty --noImplicitAny --suppressImplicitAnyIndexErrors --moduleResolution node",
     "compile_dist_es6": "tsc                                          ./dist/es6/src/Rx.ts ./dist/es6/src/add/observable/of.ts                             -m es2015   --sourceMap --outDir ./dist/es6 --target ES6 -d --diagnostics --pretty --noImplicitAny --suppressImplicitAnyIndexErrors --moduleResolution node",
     "compile_dist_es6_for_docs": "tsc                                 ./dist/es6/src/Rx.ts ./dist/es6/src/add/observable/of.ts ./dist/es6/src/MiscJSDoc.ts -m es2015   --sourceMap --outDir ./dist/es6 --target ES6 -d --diagnostics --pretty --noImplicitAny --suppressImplicitAnyIndexErrors --moduleResolution node",
     "cover": "npm-run-all cover_test cover_remapping",
-    "cover_test": "rm -rf dist/cjs && tsc typings/main/ambient/es6-shim/index.d.ts src/Rx.ts src/add/observable/of.ts -m commonjs --outDir dist/cjs --sourceMap --target ES5 -d && istanbul cover -x \"spec-js/**/*\" -x \"mocha-setup-node.js\" ./node_modules/mocha/bin/_mocha -- --opts spec/support/default.opts spec-js",
+    "cover_test": "shx rm -rf dist/cjs && tsc typings/main/ambient/es6-shim/index.d.ts src/Rx.ts src/add/observable/of.ts -m commonjs --outDir dist/cjs --sourceMap --target ES5 -d && istanbul cover -x \"spec-js/**/*\" -x \"mocha-setup-node.js\" ./node_modules/mocha/bin/_mocha -- --opts spec/support/default.opts spec-js",
     "cover_remapping": "remap-istanbul -i coverage/coverage.json -o coverage/coverage-remapped.json && remap-istanbul -i coverage/coverage.json -o coverage/coverage-remapped.lcov -t lcovonly && remap-istanbul -i coverage/coverage.json -o coverage/coverage-remapped -t html",
     "decision_tree_widget": "cd doc/decision-tree-widget && npm run build && cd ../..",
     "generate_packages": "node .make-packages.js",
@@ -85,12 +85,12 @@
     "lint": "npm-run-all lint_src lint_spec lint_perf",
     "perf": "protractor protractor.conf.js",
     "perf_micro": "node ./perf/micro/index.js",
-    "prepublish": "rm -rf ./typings && typings install && npm run build_all",
+    "prepublish": "shx rm -rf ./typings && typings install && npm run build_all",
     "publish_docs": "./publish_docs.sh",
     "test_mocha": "mocha --opts spec/support/default.opts spec-js",
     "test_browser": "npm-run-all build_spec_browser && opn spec/support/mocha-browser-runner.html",
     "test": "npm-run-all clean_spec build_spec test_mocha clean_spec",
-    "tests2png": "npm run build_spec && mkdirp tmp/docs/img && mkdirp spec-js/support && cp spec/support/*.opts spec-js/support/ && mocha --opts spec/support/tests2png.opts spec-js",
+    "tests2png": "npm run build_spec && mkdirp tmp/docs/img && mkdirp spec-js/support && shx cp spec/support/*.opts spec-js/support/ && mocha --opts spec/support/tests2png.opts spec-js",
     "watch": "watch \"echo triggering build && npm run build_test && echo build completed\" src -d -u -w=15"
   },
   "repository": {
@@ -177,6 +177,7 @@
     "protractor": "^3.1.1",
     "remap-istanbul": "0.5.1",
     "rx": "latest",
+    "shx": "^0.1.1",
     "sinon": "^2.0.0-pre",
     "sinon-chai": "^2.8.0",
     "source-map-support": "^0.4.0",