Exit states hinzugefügt

Exit-states.md

@@ -0,0 +1,22 @@
+# Script
+0 = success
+
+1 = (t)csh is not supported
+
+2 = a library is missing
+
+3 = to many grep modes given
+
+4 = invalid option given
+
+5 = a given option requires an argument
+
+6 = url is missing
+
+7 = url doesn't begin with a wget compatible scheme
+# Library
+101 = logfile not set
+
+102 = dir for logfile not writable
+
+103 = logfile already exists but is not writable 104 = a wanted binary is not installed