L.S., I've used cat to concatenate about 130 html-files into one big html-file. All the files were of more or less the same size. The resulting file is about 800Kb. I found out that in this process some lines at the end of some files were lost. I tried to reproduce the exact same result, but there was no consistency in the lines left out. The files are plain ascii and fractions of one big html-file splitted by a perlscript. The mother file was produced by mswordview, some sed and perl filters and tidy. Concatenating the fractions should result in the same file as the one that was splitted. I'm running Linux 2.2.14 on a dual pentium II with 128MB RAM. I have never experienced any problem whatsoever with my (file)system. I'm aware that this bugreport is kind of lame, but I'm not a C programmer so I can't be more specific about what went on in cat or something like that. If you need more information, please feel free to contact me. Greetings, Maarten ________________________________________________________________________________ Maarten Wijnen Warande 130 3705 ZK Zeist (030) 6951477