diff --git a/packages/cli-tools/src/launchPackager.command b/packages/cli-tools/src/launchPackager.command
index 2e3587924..615c2fac0 100755
--- a/packages/cli-tools/src/launchPackager.command
+++ b/packages/cli-tools/src/launchPackager.command
@@ -2,11 +2,14 @@
 
 THIS_DIR=$(cd -P "$(dirname "$(readlink "${BASH_SOURCE[0]}" || echo "${BASH_SOURCE[0]}")")" && pwd)
 
-source "$THIS_DIR/.packager.env"
-cd "$PROJECT_ROOT"
-"$REACT_NATIVE_PATH/cli.js" start --port $RCT_METRO_PORT
+source "$THIS_DIR/.packager.env" || exit 1
+cd "$PROJECT_ROOT" || exit 1
+"$REACT_NATIVE_PATH/cli.js" start --port "$RCT_METRO_PORT"
+CLI_EXIT_CODE=$?
 
 if [[ -z "$CI" ]]; then
   echo "Process terminated. Press <enter> to close the window"
   read -r
 fi
+
+exit "$CLI_EXIT_CODE"
diff --git a/packages/cli-tools/src/startServerInNewWindow.ts b/packages/cli-tools/src/startServerInNewWindow.ts
index 6a2180f1c..a83eed7b0 100644
--- a/packages/cli-tools/src/startServerInNewWindow.ts
+++ b/packages/cli-tools/src/startServerInNewWindow.ts
@@ -9,6 +9,8 @@ const ERROR = `a dev server manually by running ${pico.bold(
   'npm start',
 )} or ${pico.bold('yarn start')} in other terminal window.`;
 
+const quoteShellPath = (value: string) => `'${value.replace(/'/g, "'\\''")}'`;
+
 function startServerInNewWindow(
   port: number,
   projectRoot: string,
@@ -33,7 +35,9 @@ function startServerInNewWindow(
   const packagerEnvFilename = isWindows ? '.packager.bat' : '.packager.env';
   const packagerEnvFileExportContent = isWindows
     ? `set RCT_METRO_PORT=${port}\nset PROJECT_ROOT=${projectRoot}\nset REACT_NATIVE_PATH=${reactNativePath}`
-    : `export RCT_METRO_PORT=${port}\nexport PROJECT_ROOT="${projectRoot}"\nexport REACT_NATIVE_PATH="${reactNativePath}"`;
+    : `export RCT_METRO_PORT=${port}\nexport PROJECT_ROOT=${quoteShellPath(
+        projectRoot,
+      )}\nexport REACT_NATIVE_PATH=${quoteShellPath(reactNativePath)}`;
   let generatedPath = findPackageDependencyDir('.generated', {
     startDir: projectRoot,
   });
@@ -109,13 +113,17 @@ function startServerInNewWindow(
   }
   if (process.platform === 'linux') {
     try {
-      return execa.sync(terminal, ['-e', `sh ${launchPackagerScript}`], {
-        ...procConfig,
-        detached: true,
-      });
+      return execa.sync(
+        terminal,
+        ['-e', `bash ${quoteShellPath(launchPackagerScript)}`],
+        {
+          ...procConfig,
+          detached: true,
+        },
+      );
     } catch (error) {
       // By default, the child shell process will be attached to the parent
-      return execa.sync('sh', [launchPackagerScript], procConfig);
+      return execa.sync('bash', [launchPackagerScript], procConfig);
     }
   }
   if (isWindows) {