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Re: tail -f <file name> locks <file name>
Earnie Boyd wrote:
>
> --- Eugene Kanter <eugene@bgs.com> wrote:
> --8<--
> > Here is an example:
> >
> > bash window 1: bash window 2:
> > bash-2.02$ touch mappfile.out
> > bash-2.02$ tail -f mappfile.out bash $ cat > mappfile.out
> > line1 line1
> > line2 line2
> > ^C
> > bash $ rm mappfile.out
> > bash $ ls mappfile.out
> > ls: mappfile.out: No such file or
> > directory
> > bash $ cat > mappfile.out
> > bash: mappfile.out: Permission denied
> >
> > Is this enough for you to reproduce it?
>
> The rm of mappfile.out in the bash 2 window has not actually removed it yet as
> it is still open in the bash 1 window. Cygwin has marked it in a table to be
> removed when it gets closed but it's really not gone yet. You then try to
> create the file and the filesystem complains that it can't get rid of
> mappfile.out because another process has it open so you get the "Permission
> denied" error. This is a feature of the MS OSes.
Is there a way to overcome this "feature of the MS OSes"?
Is there any other "tail" which does not cause this error?
Eugene.
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