fix var

Makefile

@@ -19,7 +19,7 @@ RESTORE_FROM ?= hdd
 RESTORE_LOCATION ?= root_backup
 
 SSH_USER ?= $(shell whoami)
-SSH_HOST ?= $(shell ip addr show | grep -A 2 'eth' | grep inet | awk '{print $2}' | cut -d/ -f1 | head -n 1)
+SSH_HOST ?= $(shell ip addr show | grep -A 2 'eth' | grep inet | awk '{print $$2}' | cut -d/ -f1 | head -n 1)
 SSH_AUTH_SOCK ?= $(shell echo ${SSH_AUTH_SOCK})
 
 default: backup