Error out when no more available host names

PeerRails · Oct 12, 2014 · d58f0b0 · d58f0b0
1 parent b61494d
commit d58f0b0
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/genhost b/genhost
@@ -23,7 +23,7 @@ if [[ -z $1 ]]; then
   exit 1
 else
   if [[ $1 == *[!0-9]* ]]; then
-    echo "'$1' is not a positive integer"
+    echo "'$1' is not a positive integer" >&2
     exit 1
   fi
 fi
@@ -37,6 +37,11 @@ while IFS= read -r 'lines[n++]'; do :; done < <(sed '/^#/d' "$wordlist")
 
 # output the random hostname(s)
 for i in $(seq $1); do
+  if [[ $n -eq 0 ]]; then
+    echo "no more available hostnames left in file $wordlist" >&2
+    exit 1
+  fi
+
   # pick a random available word
   rand $n
   echo "${lines[r]}.${domain}"