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Diffstat (limited to 'doc/gawk.texi')
| -rw-r--r-- | doc/gawk.texi | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/doc/gawk.texi b/doc/gawk.texi index 59e06a08..4b0ea40c 100644 --- a/doc/gawk.texi +++ b/doc/gawk.texi @@ -27507,6 +27507,11 @@ As a side note, the assignment @samp{LC_ALL=C} in the @command{sort} command ensures traditional Unix (ASCII) sorting from @command{sort}. This is not strictly necessary here, but it's good to know how to do this. +Be careful when closing the @code{"from"} end of a two-way pipe; in this +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.) + @cindex @command{gawk}, @code{PROCINFO} array in @cindex @code{PROCINFO} array, and communications via ptys You may also use pseudo-ttys (ptys) for |