diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/coreutils.texi | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/doc/coreutils.texi b/doc/coreutils.texi index c7258ff5d..7a5023101 100644 --- a/doc/coreutils.texi +++ b/doc/coreutils.texi @@ -9563,12 +9563,25 @@ the whole file. @var{bytes} can be followed by a size specification like @samp{K}, @samp{M}, or @samp{G} to specify a multiple. @xref{Block size}. @item -u -@itemx --remove +@itemx --remove[=@var{how}] @opindex -u @opindex --remove +@opindex --remove=unlink +@opindex --remove=wipe +@opindex --remove=wipesync @cindex removing files after shredding After shredding a file, truncate it (if possible) and then remove it. If a file has multiple links, only the named links will be removed. +Often the file name is less sensitive than the file data, in which case +the optional @var{how} parameter gives control of how to more efficiently +remove each directory entry. +The @samp{unlink} parameter will just use a standard unlink call, +@samp{wipe} will also first obfuscate bytes in the name, and +@samp{wipesync} will also sync each obfuscated byte in the name to disk. +Note @samp{wipesync} is the default method, but can be expensive, +requiring a sync for every character in every file. This can become +significant with many files, or is redundant if your file system provides +synchronous metadata updates. @item -v @itemx --verbose |