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| author | Jim Meyering <meyering@redhat.com> | 2011-05-23 16:09:42 +0200 |
|---|---|---|
| committer | Jim Meyering <meyering@redhat.com> | 2011-05-23 16:09:52 +0200 |
| commit | acbfebeb8d22a87b76fae32d8d9bf0473e178fdf (patch) | |
| tree | e752631b70a3ddb8c7d622c75819ad945d831512 | |
| parent | d61f5a1c1604543af68c934190a2c0d45fec6713 (diff) | |
| download | coreutils-acbfebeb8d22a87b76fae32d8d9bf0473e178fdf.tar.xz | |
doc: describe how kernel inotify support affects tail -f
* doc/coreutils.texi (tail invocation) [-f]: Mention how inotify
kernel support makes a difference.
Prompted by http://bugzilla.redhat.com/662900
| -rw-r--r-- | doc/coreutils.texi | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/doc/coreutils.texi b/doc/coreutils.texi index 289c0baae..dfaf4c9ce 100644 --- a/doc/coreutils.texi +++ b/doc/coreutils.texi @@ -2830,6 +2830,11 @@ no @var{file} operand is specified and standard input is a FIFO or a pipe. Likewise, the @option{-f} option has no effect for any operand specified as @samp{-}, when standard input is a FIFO or a pipe. +With kernel inotify support, output is asynchronous and generally very prompt. +Otherwise, @command{tail} sleeps for one second between checks--- +use @option{--sleep-interval=@var{N}} to change that default---which can +make the output appear slightly less responsive or bursty. + @item -F @opindex -F This option is the same as @option{--follow=name --retry}. That is, tail |