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| author | Pádraig Brady <P@draigBrady.com> | 2012-04-12 12:47:30 +0100 |
|---|---|---|
| committer | Pádraig Brady <P@draigBrady.com> | 2012-04-12 18:35:17 +0100 |
| commit | 3d53e7fe1c31aa440cc9708c7c51db6b78c07653 (patch) | |
| tree | 13fc2d863087f5a0e2664592aa4902308e6fb0f0 /doc | |
| parent | 7e0ef7c035a4ef331dfd5019465ad00171a7b800 (diff) | |
| download | coreutils-3d53e7fe1c31aa440cc9708c7c51db6b78c07653.tar.xz | |
cp: change --attributes-only to not truncate existing files
* src/copy.c (copy_reg): Don't truncate an existing file,
to support copying attributes between existing files.
The original use case only considered creating new files,
and it would be a very unusual use case to be relying
on the truncating behavior.
* doc/coreutils.texi (cp invocation): Mention the non
truncating behavior.
* tests/cp/attr-existing: A new test to ensure O_TRUNC skipped.
* tests/Makefile.am: Reference the new test.
* NEWS: Mention the change in behavior.
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/coreutils.texi | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/doc/coreutils.texi b/doc/coreutils.texi index 510abb903..1fbf05116 100644 --- a/doc/coreutils.texi +++ b/doc/coreutils.texi @@ -7649,9 +7649,9 @@ Equivalent to @option{-dR --preserve=all} with the reduced diagnostics. @itemx --attributes-only @opindex --attributes-only -Preserve the specified attributes of the original files in the copy, -but do not copy any data. See the @option{--preserve} option for -controlling which attributes to copy. +Copy only the specified attributes of the source file to the destination. +If the destination already exists, do not alter its contents. +See the @option{--preserve} option for controlling which attributes to copy. @item -b @itemx @w{@kbd{--backup}[=@var{method}]} |