Sending an EOF to a named pipe

[Daniel Ganek]

I'm using named pipes in a bash script and I can't figure out how
to send an EOF so that the reader can exit.

I tried the obvious:

echo -e "\004" > mypipe

I also tried "rm mypipe"

Neither seems to generate an EOF

Anyone have any other ideas?

/dan

[Lew Pitcher]

Post by Daniel Ganek
I'm using named pipes in a bash script and I can't figure out how
to send an EOF so that the reader can exit.
echo -e "\004" > mypipe
I also tried "rm mypipe"
Neither seems to generate an EOF
Anyone have any other ideas?

Have the writer /close()/ the pipe

See the "I/O on Pipes and FIFOs" section of pipe(7) ("man 7 pipe")
"If all file descriptors referring to the write end of a pipe have
been closed, then an attempt to read(2) from the pipe will see
end-of-file (read(2) will return 0)."

[Daniel Ganek]

Post by Lew Pitcher

Post by Daniel Ganek
I'm using named pipes in a bash script and I can't figure out how
to send an EOF so that the reader can exit.
echo -e "\004" > mypipe
I also tried "rm mypipe"
Neither seems to generate an EOF
Anyone have any other ideas?

Have the writer /close()/ the pipe
See the "I/O on Pipes and FIFOs" section of pipe(7) ("man 7 pipe")
"If all file descriptors referring to the write end of a pipe have
been closed, then an attempt to read(2) from the pipe will see
end-of-file (read(2) will return 0)."

OK, but how do I get bash to close a named pipe?

/dan

[Stephen Gonedes]

Post by Daniel Ganek
I'm using named pipes in a bash script and I can't figure out how
to send an EOF so that the reader can exit.
echo -e "\004" > mypipe

a stab in the dark says `echo -en "\004"' may help but doubtful. At ^Z may
work.

kill -l may help? Sighup? dunno.

[propman]

Post by Stephen Gonedes

Post by Daniel Ganek
I'm using named pipes in a bash script and I can't figure out how
to send an EOF so that the reader can exit.
echo -e "\004" > mypipe

a stab in the dark says `echo -en "\004"' may help but doubtful. At ^Z may
work.
kill -l may help? Sighup? dunno.

Did you try looking over the "advanced bash scripting guide" available
here (free):

http://tldp.org/guides.html