cambiando syntaxis de sourcing para sh

tools/install.sh

@@ -59,7 +59,7 @@ verificar_archlinux_deps() {
 
 verificar_deps() {
   if [ -e /etc/os-release ]; then
-    source /etc/os-release
+    . /etc/os-release
     dist=$ID
     code="${VERSION_CODENAME-$VERSION_ID}"
     case "${dist}-${code}" in