From 0eeeab14fc61d3de54e6a2f2d6567de75e719596 Mon Sep 17 00:00:00 2001
From: Matteo Cypriani <mcy@lm7.fr>
Date: Mon, 20 May 2013 14:46:39 -0400
Subject: [PATCH] [cluster] Test the existence of the hosts' list

We now test if the hosts' list file exists before to work on it.
---
 cluster/cluster-deploy.sh | 4 ++++
 cluster/cluster-ping.sh   | 8 +++++++-
 cluster/cluster-run.sh    | 4 ++++
 cluster/cluster-ssh.sh    | 4 ++++
 4 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/cluster/cluster-deploy.sh b/cluster/cluster-deploy.sh
index 4c11dc7..76aaee3 100755
--- a/cluster/cluster-deploy.sh
+++ b/cluster/cluster-deploy.sh
@@ -94,6 +94,10 @@ HOSTS_LIST_NAME="$1"
 HOSTS="$HOME/.config/cluster/${HOSTS_LIST_NAME}.lst"
 shift
 echo "Using file '$HOSTS' as hosts' list."
+if [ ! -f "$HOSTS" ] ; then
+  echo "The hosts' list file doesn't exist or is not a regular file."
+  exit 3
+fi
 
 # Login
 if [ "$LOGIN" != "" ] ; then
diff --git a/cluster/cluster-ping.sh b/cluster/cluster-ping.sh
index e24d0c3..453b8b3 100755
--- a/cluster/cluster-ping.sh
+++ b/cluster/cluster-ping.sh
@@ -10,13 +10,19 @@
 #
 # Ping a list of remote hosts using fping.
 
+# Check arguments
 if [ $# -ne 1 ] ; then
   echo "Usage: $0 <hosts_list>"
   exit 1
 fi
 
+# Hosts' list file
 HOSTS="$HOME/.config/cluster/$1.lst"
-shift
 echo "Using file '$HOSTS' as hosts' list."
+if [ ! -f "$HOSTS" ] ; then
+  echo "The hosts' list file doesn't exist or is not a regular file."
+  exit 2
+fi
 
+# Go!
 exec fping $(cat "$HOSTS") 2>/dev/null
diff --git a/cluster/cluster-run.sh b/cluster/cluster-run.sh
index 673b6c0..d363599 100755
--- a/cluster/cluster-run.sh
+++ b/cluster/cluster-run.sh
@@ -47,6 +47,10 @@ fi
 HOSTS="$HOME/.config/cluster/$1.lst"
 shift
 echo "Using file '$HOSTS' as hosts' list."
+if [ ! -f "$HOSTS" ] ; then
+  echo "The hosts' list file doesn't exist or is not a regular file."
+  exit 2
+fi
 
 # Login
 if [ "$LOGIN" != "" ] ; then
diff --git a/cluster/cluster-ssh.sh b/cluster/cluster-ssh.sh
index 0bcba94..9cf2e44 100755
--- a/cluster/cluster-ssh.sh
+++ b/cluster/cluster-ssh.sh
@@ -38,6 +38,10 @@ fi
 HOSTS="$HOME/.config/cluster/$1.lst"
 shift
 echo "Using file '$HOSTS' as hosts' list."
+if [ ! -f "$HOSTS" ] ; then
+  echo "The hosts' list file doesn't exist or is not a regular file."
+  exit 2
+fi
 
 # Login
 if [ "$LOGIN" != "" ] ; then