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i've found that -w for a timout is one way to do it, but even 1 second makes it a bit unresponsive (for what i'm doing the script may need to run in quick succession)

thanks for this.

sorry, 1 more question - when i do nc with the -u option, it keeps running and doesn't give me the next prompt until i press ctrl-c. is there a way to stop this from happening?...

great, thanks a lot

the tr bit seems to do the trick but i dont get why.. thanks though

didn't know about -n, great thanks. what's the tr for? '.' seems to be 2e rather than 00

hm, without the quotes it still seems to just give the character values

2f 00 00 00

writes a file like this

32 66 20 30 30 20 30 30 20 30 30 0A

(32 for the '2' character, 66 for 'f', 20...

i want to output something like
2f 00 00 00

but i can't seem to escape characters like i'm used to in some programming languages, so with this:

echo "/\0\0\0" >> outputfile

i actually get...

how i do i do that?

damn, must be this osx implementation of bash..

thanks for trying it.

i'm doing this in one terminal:

nc -lu 7402

and it appears to start listening properly, then in another i do this:

echo "hello" | nc -u localhost 7402

and nothing happens on the listening...