save binary as a tmp file

start.sh

@@ -1,21 +1,31 @@
-#!/bin/bash
+#!/bin/sh
 
-RC='\e[0m'
-RED='\e[31m'
-YELLOW='\e[33m'
-GREEN='\e[32m'
+RC='\033[0m'
+RED='\033[0;31m'
 
-# Check if the home directory and linuxtoolbox folder exist, create them if they don't
-LINUXTOOLBOXDIR="$HOME/linuxtoolbox"
+linutil="https://github.com/ChrisTitusTech/linutil/raw/main/linutil"
 
-if [[ ! -d "$LINUXTOOLBOXDIR" ]]; then
-    echo -e "${YELLOW}Creating linuxtoolbox directory: $LINUXTOOLBOXDIR${RC}"
-    mkdir -p "$LINUXTOOLBOXDIR"
-    echo -e "${GREEN}linuxtoolbox directory created: $LINUXTOOLBOXDIR${RC}"
+check() {
+    local exit_code=$1
+    local message=$2
+
+    if [ $exit_code -ne 0 ]; then
+        echo "${RED}ERROR: $message${RC}"
+        exit 1
     fi
+}
 
-cd "$LINUXTOOLBOXDIR" || exit
+TMPFILE=$(mktemp)
+check $? "Creating the temporary file"
 
-curl -L https://github.com/ChrisTitusTech/linutil/raw/main/linutil -o linutil
-chmod +x ./linutil
-./linutil
+curl -fsL $linutil -o $TMPFILE
+check $? "Downloading linutil"
+
+chmod +x $TMPFILE
+check $? "Making linutil executable"
+
+"$TMPFILE"
+check $? "Executing linutil"
+
+rm -f $TMPFILE
+check $? "Deleting the temporary file"