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doc: add example to demonstrate sub-second sleep times

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* doc/coreutils.texi (sleep invocation): Add an example to demonstrate
how to use the floating-point and the scientific notation to sleep
for sub-second times, e.g. milli-, micro- and nanoseconds.

Inspired by Stephane Chazelas in:
  https://lists.gnu.org/r/coreutils/2019-12/msg00005.html
This commit is contained in:
Bernhard Voelker
2019-12-08 17:29:57 +01:00
parent ec5ab42604
commit 7490e94aa7
1 changed files with 7 additions and 0 deletions
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doc/coreutils.texi
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@@ -18248,6 +18248,13 @@ non-negative integer argument without a suffix, GNU @command{sleep}
also accepts two or more arguments, unit suffixes, and floating-point also accepts two or more arguments, unit suffixes, and floating-point
numbers in either the current or the C locale. @xref{Floating point}. numbers in either the current or the C locale. @xref{Floating point}.
For instance, the following could be used to @command{sleep} for
1 second, 234 milli-, 567 micro- and 890 nanoseconds:
@example
sleep 1234e-3 567.89e-6
@end example
The only options are @option{--help} and @option{--version}. @xref{Common The only options are @option{--help} and @option{--version}. @xref{Common
options}. options}.