gistfile1.py

#!/usr/bin/env python

import glob
import time

files = set()
positions = dict()

def _add_new_files(read = True):
    global files
    all_files = set(glob.glob("*.log"))
    new_files = all_files - files
    files = all_files
    for file in new_files:
        handle = open(file, "r")
        if read:
            handle.read()
        positions[file] = handle.tell()

_add_new_files()

while True:
    time.sleep(.1)
    _add_new_files(False)

    for file, pos in positions.iteritems():
        file_written = False
        with open(file, "r") as handle:
            handle.seek(pos)
            while True:
                line = handle.readline()
                if line:
                    if file_written:
                        print "====== {0}".format(file)
                    print line
                else:
                    break
            positions[file] = handle.tell()