Almost there.

etc/check-links.lua

@@ -5,7 +5,6 @@
 -- RCS ID: $Id$
 -----------------------------------------------------------------------------
 
-require"luasocket"
 require"http"
 
 socket.http.TIMEOUT = 10

etc/eol.lua

@@ -1,6 +1,9 @@
+require"mime.lua"
+require"ltn12.lua"
+
 local marker = '\n'
 if arg and arg[1] == '-d' then marker = '\r\n' end
 local filter = mime.normalize(marker)
 local source = ltn12.source.chain(ltn12.source.file(io.stdin), filter)
 local sink = ltn12.sink.file(io.stdout)
-ltn12.pump(source, sink)
+ltn12.pump.all(source, sink)

etc/get.lua

@@ -4,6 +4,10 @@
 -- Author: Diego Nehab
 -- RCS ID: $Id$
 -----------------------------------------------------------------------------
+require"http"
+require"ftp"
+require"url"
+
 -- formats a number of seconds into human readable form
 function nicetime(s)
 	local l = "s"