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| author | Arnold D. Robbins <arnold@skeeve.com> | 2016-04-02 22:56:52 +0300 |
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| committer | Arnold D. Robbins <arnold@skeeve.com> | 2016-04-04 06:37:45 +0300 |
| commit | 6d22cdfde8a2136080efba406d980ecac537b07d (patch) | |
| tree | c784b3b7d4fcac934f0666a449bd2e216fab0af7 /doc/gawktexi.in | |
| parent | b332053a160357e6c30c22f9ca90af9129e4550b (diff) | |
| download | egawk-6d22cdfde8a2136080efba406d980ecac537b07d.tar.gz egawk-6d22cdfde8a2136080efba406d980ecac537b07d.tar.bz2 egawk-6d22cdfde8a2136080efba406d980ecac537b07d.zip | |
Further doc on closing one end of a two-way pipe.
Diffstat (limited to 'doc/gawktexi.in')
| -rw-r--r-- | doc/gawktexi.in | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/gawktexi.in b/doc/gawktexi.in index 4d2a76f3..e233a383 100644 --- a/doc/gawktexi.in +++ b/doc/gawktexi.in @@ -26603,6 +26603,12 @@ case @command{gawk} waits for the child process to exit, which may cause your program to hang. (Thus, this particular feature is of much less use in practice than being able to close the @code{"to"} end.) +@quotation CAUTION +It is a fatal error to write to the @code{"to"} end of a two-way +pipe which has been closed. It is also a fatal error to read +from the @code{"from"} end of a two-way pipe that has been closed. +@end quotation + @cindex @command{gawk}, @code{PROCINFO} array in @cindex @code{PROCINFO} array, and communications via ptys You may also use pseudo-ttys (ptys) for |