diff -ur v19/site_ut.py v20/site_ut.py
--- v19/site_ut.py	2020-04-25 23:42:43.000000000 +0900
+++ v20/site_ut.py	2020-04-26 00:30:19.000000000 +0900
@@ -156,9 +156,18 @@
 	cmd = 'wget -q -O- {}/{}/{} | sh'.format( url, path, scr )
 	return call( cmd, 'err' ) != 'err'
 
+def cat(url, path): # file only
+	s = '{}/{}'.format( url, path )	
+	if not exists_url( s ):
+		return
+	cmd = 'wget -q -O- ' + s
+	s = call( cmd )
+	if s:
+		dbg.out( s, '' )
+
 if __name__ == "__main__":
 	site = new( 'ftp_ut.yaml' )
-	cmds = ( 'put', 'get', 'exists' )
+	cmds = ( 'put', 'get', 'exists', 'cat' )
 	a = arg.new()
 	k = a.pop()
 	if k in cmds:
@@ -177,6 +186,8 @@
 				dbg.out( h + ' ' + s )
 				if not r:
 					sys.exit( 1 )
+			elif k == 'cat':
+				cat( st.url, path )
 	else:
 		st = site.get( k )
 		if st: