From f48ab51c8dfc92550b5172844025551112a3c0fd Mon Sep 17 00:00:00 2001
From: Karol Pucynski <kpucynski@gmail.com>
Date: Tue, 28 Apr 2020 12:29:00 +0200
Subject: [PATCH] Graceful exit on non-linux platforms.

---
 bashtop | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/bashtop b/bashtop
index 373fd39..efb58ed 100755
--- a/bashtop
+++ b/bashtop
@@ -173,8 +173,24 @@ else
 	}
 fi
 
+system_check_() {
+    local system
+    case "$(uname -s)" in
+        Linux*)  system=Linux;;
+        Darwin*) system=MacOS;;
+        CYGWIN*) system=Cygwin;;
+        MINGW*)  system=MinGw;;
+        *)       system="Other"
+    esac
+    if [[ "$system" != "Linux" ]]; then
+        echo "This tool does not support $system platform."
+        exit 1
+    fi
+}
 
 init_() { #? Collect needed information and set options before startig main loop
+    system_check_
+
 	local i
 	#* Set terminal options, save and clear screen
 	tput smcup