ip2cidr Small and simple program for converting a netmask into a CIDR
	git clone https://noxz.tech/git/ip2cidr.git
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commit: 62d5518179e42ea5970401b41efcbb8fc33e6bd0
parent: 366289f96b2cea63126cad3060de01bba3614f51
author: z0noxz <chris@noxz.tech>
date:   Fri, 3 Aug 2018 22:09:08 +0200

fix correct exit codes

diff --git a/ip2cidr b/ip2cidr
@@ -57,13 +57,13 @@ function isip {
 # check if input already is a CIDR
 if [[ $1 =~ ^[0-9]{1,2}$ && $1 -le 32 && $1 -gt 0 ]]; then
     echo "$1"
-    exit
+    exit 0
 fi
 
 # check if input is a valid IP, then return CIDR from IP
 if isip $1; then
     ip2cidr $1
-    exit
+    exit 0
 fi
 
 # if all fails print usage
@@ -76,3 +76,5 @@ LICENSE NOTICE
 $license
 EOF
 printf "%s\n\n" "$usage" >&2
+
+exit 1