mirrors/coreutils
0
0
Fork 0
mirror of https://github.com/coreutils/coreutils.git synced 2024-11-24 10:23:31 +08:00
Code Issues Packages Projects Releases Wiki Activity

doc: NEWS: mention cp's improvement

Browse Source 
* NEWS (New Features): cp now copies sparse files efficiently.
This commit is contained in:
Jim Meyering 2011-01-30 21:27:12 +01:00
parent 199355e234
commit 5b11cd0179
1 changed files with 9 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
NEWS
View File

@ -21,6 +21,15 @@ GNU coreutils NEWS -*- outline -*-
** New features
cp now copies sparse files efficiently on file systems with FIEMAP
support (ext4, btrfs, xfs, ocfs2). Before, it had to read 2^20 bytes
when copying a 1MiB sparse file. Now, it copies bytes only for the
non-sparse sections of a file. Similarly, to induce a hole in the
output file, it had to detect a long sequence of zero bytes. Now,
it knows precisely where each hole in an input file is, and can
reproduce them efficiently in the output file. mv also benefits
when it resorts to copying, e.g., between file systems.
join now supports -o 'auto' which will automatically infer the
output format from the first line in each file, to ensure
the same number of fields are output for each line.