diff -ur v16/site_ut.py v17/site_ut.py
--- v16/site_ut.py	2020-04-01 19:50:00.000000000 +0900
+++ v17/site_ut.py	2020-04-25 18:55:19.000000000 +0900
@@ -1,5 +1,6 @@
 #!/usr/bin/env python
 
+import sys
 import os
 
 import empty
@@ -65,6 +66,8 @@
 
 call = lambda cmd, defval='' : cmd_ut.call( cmd, defval, b2s=True )
 
+exists_url = lambda s: call( 'wget -q --spider ' + s, 'err' ) != 'err'
+
 def to_num(s):
 	if type(s) != str:
 		return s
@@ -127,17 +130,24 @@
 	call( cmd )
 
 def get(url, path, scr='dl.sh'):
-	(dir_, name) = os.path.split( path )
+	if not exists_url( '{}/{}'.format( url, path ) ):
+		return False
 
-	if not os.path.exists( dir_ ):
+	(dir_, name) = os.path.split( path )
+	if dir_ and not os.path.exists( dir_ ):
 		call( 'mkdir -p ' + dir_ )
 
-	cmd = '( cd {} ; wget -q {}/{} )'.format( dir_, url, path )
+	cmd = 'wget -q {}/{}'.format( url, path )
+	if dir_:
+		cmd = '( cd {} ; {} )'.format( dir_ )
 	if call( cmd, 'err' ) != 'err':
-		return
+		return True
+
+	if not exists_url( '{}/{}/{}'.format( url, path, scr ) ):
+		return False
 
 	cmd = 'wget -q -O- {}/{}/{} | sh'.format( url, path, scr )
-	call( cmd )
+	return call( cmd, 'err' ) != 'err'
 
 if __name__ == "__main__":
 	site = new( 'ftp_ut.yaml' )
@@ -151,7 +161,8 @@
 			if k == 'put':
 				put( st.url, path, st.lmt_size )
 			elif k == 'get':
-				get( st.url, path )
+				if not get( st.url, path ):
+					sys.exit( 1 )
 	else:
 		st = site.get( k )
 		if st: