diff --git a/scripts/setup-helper-functions.sh b/scripts/setup-helper-functions.sh
index aeb29399ba308..4b46317ef66c8 100644
--- a/scripts/setup-helper-functions.sh
+++ b/scripts/setup-helper-functions.sh
@@ -43,13 +43,14 @@ function github_checkout {
   shift
   local GIT_CLONE_PARAMS=$@
   local DIRNAME=$(basename $REPO)
+  SUDO="${SUDO:-""}"
   cd "${DEPENDENCY_DIR}"
   if [ -z "${DIRNAME}" ]; then
     echo "Failed to get repo name from ${REPO}"
     exit 1
   fi
   if [ -d "${DIRNAME}" ] && prompt "${DIRNAME} already exists. Delete?"; then
-    rm -rf "${DIRNAME}"
+    ${SUDO} rm -rf "${DIRNAME}"
   fi
   if [ ! -d "${DIRNAME}" ]; then
     git clone -q -b $VERSION $GIT_CLONE_PARAMS "https://github.com/${REPO}.git"
@@ -152,13 +153,13 @@ function wget_and_untar {
 function cmake_install {
   local NAME=$(basename "$(pwd)")
   local BINARY_DIR=_build
+  SUDO="${SUDO:-""}"
   if [ -d "${BINARY_DIR}" ] && prompt "Do you want to rebuild ${NAME}?"; then
-    rm -rf "${BINARY_DIR}"
+    ${SUDO} rm -rf "${BINARY_DIR}"
   fi
   mkdir -p "${BINARY_DIR}"
   CPU_TARGET="${CPU_TARGET:-unknown}"
   COMPILER_FLAGS=$(get_cxx_flags $CPU_TARGET)
-  SUDO="${SUDO:-""}"
 
   # CMAKE_POSITION_INDEPENDENT_CODE is required so that Velox can be built into dynamic libraries \
   cmake -Wno-dev -B"${BINARY_DIR}" \
diff --git a/scripts/setup-ubuntu.sh b/scripts/setup-ubuntu.sh
index 4c35e0c701824..1fdbfbed5375e 100755
--- a/scripts/setup-ubuntu.sh
+++ b/scripts/setup-ubuntu.sh
@@ -29,14 +29,15 @@ BOOST_VERSION=boost-1.84.0
 NPROC=$(getconf _NPROCESSORS_ONLN)
 DEPENDENCY_DIR=${DEPENDENCY_DIR:-$(pwd)}
 export CMAKE_BUILD_TYPE=Release
-export SUDO=sudo
+SUDO="${SUDO:-"sudo --preserve-env"}"
 
 # Install all velox and folly dependencies.
 # The is an issue on 22.04 where a version conflict prevents glog install,
 # installing libunwind first fixes this.
-apt update && apt install sudo
-sudo --preserve-env apt update && sudo --preserve-env apt install -y libunwind-dev && \
-  sudo --preserve-env apt install -y \
+
+${SUDO} apt update
+${SUDO} apt install -y libunwind-dev
+${SUDO} apt install -y \
   g++ \
   cmake \
   ccache \
@@ -76,7 +77,7 @@ function install_fmt {
 function install_boost {
   github_checkout boostorg/boost "${BOOST_VERSION}" --recursive
   ./bootstrap.sh --prefix=/usr/local
-  ./b2 "-j$(nproc)" -d0 install threading=multi
+  ${SUDO} ./b2 "-j$(nproc)" -d0 install threading=multi
 }
 
 function install_folly {
@@ -105,17 +106,19 @@ function install_fbthrift {
 }
 
 function install_conda {
-  mkdir -p conda && cd conda
+  MINICONDA_PATH=/opt/miniconda-for-velox
+  if [ -e ${MINICONDA_PATH} ]; then
+    echo "File or directory already exists: ${MINICONDA_PATH}"
+    return
+  fi
   ARCH=$(uname -m)
-  
   if [ "$ARCH" != "x86_64" ] && [ "$ARCH" != "aarch64" ]; then
     echo "Unsupported architecture: $ARCH"
     exit 1
   fi
   
+  mkdir -p conda && cd conda
   wget https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-$ARCH.sh
-  
-  MINICONDA_PATH=/opt/miniconda-for-velox
   bash Miniconda3-latest-Linux-$ARCH.sh -b -p $MINICONDA_PATH
 }