I need to build an endless stream of figures like /dev/zero but I would like it to spam customized character (like 'a') rather than 0x00. Is there a means to do it?

The third column that is fascinating would be the TTL=sixty four. TTL - "aka. The perfect time to Stay", signify the packet will only transverse as a result of at most sixty four nodes just before timing out. So If your program is a lot more than sixty four "hops" away from your system, You can not ping it, Until you enhance the TTL.

Check out to discover if modem-supervisor is running -- and kill it if it is. If it thinks which the product is often a modem, it will phase in and try to dial the modem also. This preset as equivalent problem for me lately.

two Looks like the modem is echoing the command back for you (predicted) but then the tty port is sending the command again towards the modem and building your endless loop. Test: stty -echo to prevent the port from echoing the instructions again towards the modem.

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Does that suggest it is properly pinging the IP? Or that it's seeking and failing and attempting yet again? How do I get it to stop?

So I believe I've realized that lesson: Just carefully craft renaming, shifting, copying plus the lookup sample to ensure that obtain will never take care of a similar file 2 more info times.

. Rather, it receives the documents to procedure "incrementally" within the fundamental O/S and processes Each individual of them once it is aware of over it (let's overlook a certain number of buffering which might occur because This really is irrelevant for the problem).

In some circumstances, it will not likely right away destroy the "COMMAND", As an example, should you background it, it could sneak earlier alive whether or not It truly is mum or dad is dead. But the loop is dead, and that's the essential part.

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peterhpeterh 94011 gold badge88 silver badges1818 bronze badges 1 Most if not all of your current fears are currently resolved in other responses in this article. None of the current answers propose fast paced loops.

@meuh will consider that upcoming. Thus far display screen worked to stop the repeat actions, but it surely stops the serial product from receiving the concept. Closing the display terminal makes it possible for the information as a result of.

This makes a concern when booting in BIOS method with The existing Model of Rufus, once the USB drive is composed in ISO mode, simply because, because we have to set up a GRUB 2.

slm's answer is excellent, but if you just choose to promptly Examine no matter if a host is alive (and reachable, and responding to ping) then you can use fping in lieu of ping. It pings the host(s), and waits a short time for the response. fping's exit code reports results or failure.