Date: Thu, 7 Mar 2002 16:10:01 -0800 (PST) From: Giorgos Keramidas <keramida@freebsd.org> To: freebsd-doc@freebsd.org Subject: Re: docs/35646: cp(1) page needs a "Bugs" section. Message-ID: <200203080010.g280A1P38626@freefall.freebsd.org>
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The following reply was made to PR docs/35646; it has been noted by GNATS.
From: Giorgos Keramidas <keramida@freebsd.org>
To: "Gary W. Swearingen" <swear@blarg.net>
Cc: bug-followup@freebsd.org
Subject: Re: docs/35646: cp(1) page needs a "Bugs" section.
Date: Fri, 8 Mar 2002 02:07:24 +0200 (EET)
Gary W. Swearingen wrote:
> The cp(1) program has a feature that should be documented in a "Bugs"
> section. (Or can there be a "Warnings" section?)
Are you sure this should be documented in the manual page of cp(1) ?
Any program that copies data and doesn't take special care of 'holes' will
show similar behavior. Should we modify their manual pages too?
[ See what dd(1) does instead of cp(1) below. ]
hades:~> cd /tmp
hades:/tmp> df .
Filesystem 1K-blocks Used Avail Capacity Mounted on
/dev/ad0s1a 194548 65916 113069 37% /
hades:/tmp> dd if=/dev/zero of=zeros-sparse oseek=1000 count=2
2+0 records in
2+0 records out
1024 bytes transferred in 0.000685 secs (1494682 bytes/sec)
hades:/tmp> df .
Filesystem 1K-blocks Used Avail Capacity Mounted on
/dev/ad0s1a 194548 65932 113053 37% /
hades:/tmp> dd if=zeros-sparse of=zeros-dd
1002+0 records in
1002+0 records out
513024 bytes transferred in 0.286582 secs (1790147 bytes/sec)
^^^ Many blocks copied.
hades:/tmp> df .
Filesystem 1K-blocks Used Avail Capacity Mounted on
/dev/ad0s1a 194548 66444 112541 37% /
hades:/tmp> ls -l zeros-*
-rw-r--r-- 1 charon wheel - 513024 Mar 8 02:03 zeros-dd
-rw-r--r-- 1 charon wheel - 513024 Mar 8 02:03 zeros-sparse
Note that I'm not opposing the change. I'm only asking for ideas about all the
possible programs that will behave exactly like cp(1) and dd(1) do, when they
find files with 'holes'.
Giorgos Keramidas FreeBSD Documentation Project
keramida@{freebsd.org,ceid.upatras.gr} http://www.FreeBSD.org/docproj/
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