Am 03.10.2018 um 17:37 schrieb Ole Tange:
This works:
$ mkfifo fifo
$ echo > fifo & grep . fifo
[1] 10232
[1]+ Done echo > fifo
But this fails:
$ echo > fifo & grep . < fifo
[1] 11756
grep: (standard input): Invalid argument
[1]+ Done echo > fifo
I see the same behavior on MINGW, but I do not see the same behavior on
GNU/Linux.
Regards,
Ole Tange
I assume it is a consequence of the same problem on files.
You can not use the same source for input and output.
$ echo "prova" > prova.txt
$ cat prova.txt
prova
$ cat prova.txt > prova.txt
$ cat prova.txt
the file was erased
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