diff --git a/check_linux_memory.py b/check_linux_memory.py
index 1085d34..9d5b489 100755
--- a/check_linux_memory.py
+++ b/check_linux_memory.py
@@ -1,27 +1,48 @@
 #!/usr/bin/python3
 
-from pprint import pprint
+import sys
 
 with open('/proc/meminfo', 'r') as f:
     lines = f.read().splitlines()
 
 mem = {x.split(':',1)[0] : int( x.split(':',1)[1].replace('kB', '').lstrip().rstrip() ) for x in lines}
 
-#pprint(mem)
-
-
 mem['MemUsed'] = mem['MemTotal'] - mem['MemFree'] - mem ['Cached'] - mem['SReclaimable'] - mem['Buffers']
 mem['SwapUsed'] = mem['SwapTotal'] - mem['SwapFree']
 
 mem['OverallUsed'] = mem['MemUsed'] + mem['SwapUsed']
 
-
-pprint(mem)
+ratio = float(mem['OverallUsed']) / float(mem['MemTotal']) * 100.0
 
 
-print('MemTotal:    %8.2f MB' % (mem['MemTotal']/1024) )
-print('OverallUsed: %8.2f MB' % (mem['OverallUsed']/1024) )
-print('Ratio:       %8.2f %%' % (mem['OverallUsed']/mem['MemTotal']*100.0) )
-print('MemUsed:     %8.2f MB' % (mem['MemUsed']/1024) )
-print('SwapUsed:    %8.2f MB' % (mem['SwapUsed']/1024) )
+#print('MemTotal:    %8.2f MB' % (mem['MemTotal']/1024) )
+#print('OverallUsed: %8.2f MB' % (mem['OverallUsed']/1024) )
+#print('Ratio:       %8.2f %%' % ratio )
+#print('MemUsed:     %8.2f MB' % (mem['MemUsed']/1024) )
+#print('SwapUsed:    %8.2f MB' % (mem['SwapUsed']/1024) )
+
+out = 'MemRatio: %.1f%% of %.1fGB RAM (%.1fGB Swap)' % ( ratio, (mem['MemTotal']/1024.0/1024.0), (mem['SwapTotal']/1024.0/1024.0) )
+
+if ratio > 150.0:
+	exitcode = 2
+	exitstr = 'CRITICAL'
+elif ratio > 100.0:
+	exitcode = 1
+	exitstr = 'WARNING'
+else:
+	exitcode = 0
+	exitstr = 'OK'
+
+multiout = []
+for label in ['MemTotal', 'OverallUsed', 'MemUsed', 'SwapTotal', 'SwapUsed']:
+	multiout.append('%s: %.4fGB' % (label, float(mem[label])/1024.0/1024.0))
+
+perfdata = []
+for label in ['MemTotal', 'OverallUsed', 'MemUsed', 'SwapTotal', 'SwapUsed']:
+	perfdata.append('%s=%dB;;;;' % (label, mem[label]*1024) )
+
+
+print(exitstr + ' ' + out + '|' + ' '.join(perfdata))
+print('\n'.join(multiout))
+sys.exit(exitcode)