Chk all pkgs before init exit. Hide whereis output

init

@@ -2,18 +2,24 @@
 SCRIPT_DIR="$( cd "$( dirname "$0" )" && pwd )"
 NEEDS="needs to be installed through your distro's package manager"
 
-if ! whereis python3 | grep "/"; then
+failed=false
+
+if ! whereis python3 | grep "/" &> /dev/null; then
     echo "python3" $NEEDS
-    exit 1
+    failed=true
 fi
 
-if ! whereis pip3 | grep "/"; then
+if ! whereis pip3 | grep "/" &> /dev/null; then
     echo "pip3" $NEEDS
-    exit 1
+    failed=true
 fi
 
-if ! whereis pdflatex | grep "/"; then
+if ! whereis pdflatex | grep "/" &> /dev/null; then
     echo "texlive" $NEEDS
+    failed=true
+fi
+
+if $failed; then
     exit 1
 fi