Use correct counter when checking which generations to delete

In a18f7fb9 we fixed the counter, but up to now didn't use the
correct counter at all :-/

diff --git a/bin/backup-script b/bin/backup-script
index 79b171d508a76a6b347cabf09f0c6121c6520644..478e505f9795f9bff02d47990abb8f522bca2449 100755 (executable)
--- a/bin/backup-script
+++ b/bin/backup-script
@@ -452,8 +452,8 @@ for f in $sys; do
                        ln -s "$sys_target" "$sys_root/latest"
                fi
                # Clean up old generations
-               to_delete=$(ls -1t "$sys_root" 2>/dev/null | tail -n+$generations | sort)
                declare -i gen_count=$generations+2
+               to_delete=$(ls -1t "$sys_root" 2>/dev/null | tail -n+$gen_count | sort)
                if [ -n "$to_delete" -a $ok -eq 1 ]; then
                        [ "$DRYRUN" -eq 0 ] \
                                && echo "Deleting old backup generations (keep $generations) ..." \