#!/usr/bin/env python

# fdsync
#
# v1.0.0
#
# written by: Oliver Cordes 2011-08-17
# updated by: Oliver Cordes 2011-08-17

# fdsync is a missing feature of the bash which can be used to
# sync/flush stdout or stderr. We use this to get in sync while
# using set -x to get debug information to stderr and piping
# stdout and stderr into tee. bash is not doing a flush 
# automatically, so the resulting output is always a mess.

# SYNTAX:
#  fdsync [file] [[file] ... ]
#
# Example:
#  fdsync /dev/stdout     or
#  fdsync /dev/stdout /dev/stderr
#

import sys

for filename in sys.argv[1:]:
    try:
	f = open( filename, 'rw', 0 )
    except IOError,s:
	print s
	sys.exit( 0 )
    f.flush()
    f.close()