more save kern num parsing

diff --git a/backup.sh b/backup.sh
index 256b1d9..d40470d 100755 (executable)
--- a/backup.sh
+++ b/backup.sh
@@ -37,7 +37,7 @@ fi
 
 # set kernel version(s) to store their .config
 if [ -d /usr/src/linux ] ; then
-       kernel_num=`ls /usr/src/ | grep 'linux-' | awk -F- '{ print $2 }'`
+       kernel_num=`ls /usr/src/ | grep '^linux-' | sed 's/linux-//g'`
 fi