programB 2> /var/log/programB.log one> /dev/null
The 3rd column that's attention-grabbing may be the TTL=sixty four. TTL - "aka. Time and energy to Live", signify that the packet will only transverse by means of at most sixty four nodes before timing out. So In the event the process is greater than 64 "hops" away from your program, You cannot ping it, Except if you improve the TTL.
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Any time a command terminates over a fatal sign whose variety is N, Bash makes use of the worth 128+N as being the exit status.
Test the exit standing of the command. If the command was terminated by a sign the exit code will probably be 128 + the signal variety. Within the GNU on the net documentation for bash:
Does that suggest it's effectively pinging the IP? Or that it is striving and failing and trying once again? How do I get it to halt?
Are you presently typing the information into your monitor window? If that's so try ending the road with Command-j or Command-d intsead of enter.
It's best to prevent any feasible clashes to start with in lieu of blindly counting on locate employing some magic that just is just not there. Your problem ahead of your edit was an excellent Answer, because it merely failed to match the presently renamed file whatsoever.
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Doing AT command interaction within the command line with just simple shell operations is rather unreliable. I suggest that you try to use This system atinout that's exclusively composed to concern AT command in the command line:
How to help make that the object sliding down alongside the community axis while subsequent the rotation with the another object?
Display was passing options for the tty, but I desired a means of undertaking this programmatically. Shout out to "meuh" for pointing me in the best course. In my situation, making use of `stty', I issued the following beforehand:
slm's remedy is great, but when you merely desire to quickly check here Verify regardless of whether a host is alive (and reachable, and responding to ping) You'll be able to use fping in place of ping. It pings the host(s), and waits a short time for just a response. fping's exit code reviews success or failure.