Update install script

install.sh

@@ -6,7 +6,7 @@ DOWNLOAD_URL=$(curl -fsSL https://api.github.com/repos/SupersonicAds/spotcli/rel
         | grep browser_download_url \
         | cut -d '"' -f 4)
 WHEEL_FILE="$(mktemp -d)/${DOWNLOAD_URL##*/}"
-trap "rm -f $WHEEL_FILE || true && echo 'ERROR: SpotCLI wasn\\'t installed' && exit 1" ERR
+trap "rm -f $WHEEL_FILE >/dev/null 2>&1 || true && echo 'ERROR: SpotCLI wasn\\'t installed' && exit 1" ERR
 
 echo -en "Downloading latest wheel from GitHub..."
 curl -fsSL -o $WHEEL_FILE "$DOWNLOAD_URL"
@@ -24,24 +24,27 @@ then
 elif [[ $(python3 -V 2>/dev/null) == *"Python 3"* ]]
 then
     echo -en "$(python3 -V | sed 's/Python //g') (system)\n"
-    echo -en "You may need to enter sudo password"
-    PIP="sudo $(which pip3)"
+    PIP="$(which pip3)"
+    if [ $(id -u 2>/dev/null) != "0" ] && which sudo >/dev/null 2>&1
+    then
+        PIP="$(which sudo) $PIP"
+    fi
 else
     echo -en "ERROR: Python 3 not found\n"
     exit 1
 fi
 
 echo -en "Installing SpotCLI..."
-PIP_STDOUT=$(mktemp)
-$PIP install "$WHEEL_FILE" >/dev/null
-rm -f $WHEEL_FILE
-rm -f $PIP_STDOUT
-mkdir -p $HOME/.spot
-touch $HOME/.spot/config.yaml
+PIP_STDOUT=$(mktemp 2>/dev/null)
+$PIP install -qq "$WHEEL_FILE"
+rm -f $WHEEL_FILE >/dev/null 2>&1 || true
+rm -f $PIP_STDOUT >/dev/null 2>&1 || true
+mkdir -p $HOME/.spot >/dev/null
+touch $HOME/.spot/config.yaml >/dev/null
 echo -en "done\n"
 
 echo -en "Verifying installation..."
-[[ $(spotcli version) == *"SpotCLI version"* ]]
+[[ $(spotcli version 2>/dev/null) == *"SpotCLI version"* ]]
 echo -en "ok\n"
 
 trap - EXIT