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| author | Paul Eggert <eggert@cs.ucla.edu> | 2004-11-20 08:56:05 +0000 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2004-11-20 08:56:05 +0000 |
| commit | 2852d59d222e1f9b5ba80d386d2f5614217484f4 (patch) | |
| tree | c0f82f03f97cfd3bf30eea77ff22dfa263cdf329 /doc | |
| parent | 8adf2bc638d15de87dfabe1b68b872eba0a68230 (diff) | |
| download | coreutils-2852d59d222e1f9b5ba80d386d2f5614217484f4.tar.xz | |
(dd invocation): Add noctty flag to dd.
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/coreutils.texi | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/doc/coreutils.texi b/doc/coreutils.texi index 0b1a69bff..85c4188e8 100644 --- a/doc/coreutils.texi +++ b/doc/coreutils.texi @@ -6832,12 +6832,20 @@ Use non-blocking I/O. @cindex symbolic links, following Do not follow symbolic links. +@item noctty +@opindex noctty +@cindex controlling terminal +Do not assign the file to be a controlling terminal for @command{dd}. +This has no effect when the file is not a terminal. +On many hosts (e.g., @acronym{GNU}/Linux hosts), this option has no effect +at all. + @end table These flags are not supported on all systems, and @samp{dd} rejects attempts to use them when they are not supported. When reading from -standard input or writing to standard output, the @samp{nofollow} flag -should not be specified, and the other flags +standard input or writing to standard output, the @samp{nofollow} and +@samp{noctty} flags should not be specified, and the other flags (e.g., @samp{nonblock}) can affect how other processes behave with the affected file descriptors, even after @command{dd} exits. |