On 24/10/2012 08:07, Virgil Stokes wrote: > On 23-Oct-2012 22:03, Cousin Stanley wrote: >> Virgil Stokes wrote: >> >>> Not sure about "tac" --- could you provide more details on this >>> and/or a simple example of how it could be used for fast reversed >>> "reading" of a data file ? >> tac is available as a command under linux .... >> >> $ whatis tac >> tac (1) - concatenate and print files in reverse >> >> $ whereis tac >> tac: /usr/bin/tac /usr/bin/X11/tac /usr/share/man/man1/tac.1.gz >> >> $ man tac >> >> SYNOPSIS >> tac [OPTION]... [FILE]... >> >> DESCRIPTION >> >> Write each FILE to standard output, last line first. >> >> With no FILE, or when FILE is -, read standard input. >> >> >> I only know that the tac command exists >> but have never used it myself .... >> >> > Unfortunately, I may be forced to process the data on a Windows > platform; but, thanks Cousin for the Linux tip.
Well, addressing that specific point, tac is available for Windows: http://unxutils.sourceforge.net/ No idea how efficient it is... TJG -- http://mail.python.org/mailman/listinfo/python-list
