Do someone know how to run a command for every line emitted in a unix pipe? I tried the oneliner in the linked story using Mac OS X’s `say`, but it doesn’t work with pipes.
cat input |while read a; do do_something_with $a; done
thank you so much!
The best ping story I've ever heard
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Re: The best ping story I've ever heard
#22Do someone know how to run a command for every line emitted in a unix pipe? I tried the oneliner in the linked story using Mac OS X’s `say`, but it doesn’t work with pipes.
xargs -n1 (-n is so it executes the command for each input) You'll also need sed -l to limit buffering. ping | sed -l 's/.*/ping/' | xargs -n1 say
perfect!
Re: The best ping story I've ever heard
#23This is a good one too, although not strictly ping related. http://www.ibiblio.org/harris/500milemail.html
That's the I thought about too :-)
Re: The best ping story I've ever heard
#24Do someone know how to run a command for every line emitted in a unix pipe? I tried the oneliner in the linked story using Mac OS X’s `say`, but it doesn’t work with pipes.
For some fun: https://github.com/mpdehaan/ansible-and-juliet
Re: The best ping story I've ever heard
#25This is a good one too, although not strictly ping related. http://www.ibiblio.org/harris/500milemail.html
There's also this legendary Amazon review, which is strictly ping-related: http://www.amazon.com/review/R2VDKZ4X1F992Q
"At the same time each day (I suspect this is scheduled under cron)"
Spectacular.
Re: The best ping story I've ever heard
#26We once had an Ericsson MSC that only replied to _uneven_ ICMP packets due to some bug. Made it look like there was 50% packet loss on an otherwise perfectly good Cat 5 cable... (edit: ICMP instead of IP)
Checksum issue?
Re: The best ping story I've ever heard
#27http://bash.org/?5273 Surely most people reading this will know the quote linked without having to even click it.
It's not as fun as it was >10 years ago. Tablets and smartphones ruined it..
Re: The best ping story I've ever heard
#28http://bash.org/?5273 Surely most people reading this will know the quote linked without having to even click it.
Yup, my first thought as soon as I'd read "ping" on this post even
Re: The best ping story I've ever heard
#29now I'm really tempted to add some voice notification function to pingd [https://github.com/pinggg/pingd]
Re: The best ping story I've ever heard
#30Earlier quoted context omitted.
You might want to use "--unbuffered" flag in sed execution.
that option appears to be gnu-specific. -l should make it line-buffered
Note that -l is also an extension, just a BSD one.
The only options in POSIX sed are -e, -f and -n (and -e is usually cargo-culted by people who want -E. -E being a BSD extension enabling extended regular expressions — -r in GNU sed)