programB 2> /var/log/programB.log one> /dev/null
AkeoAkeo 20611 silver badge44 bronze badges Include a comment
I understand it is a million several years aged but I'd this exact situation right now. Basically, if I hooked up towards the serial unit with "screen" then detach, I could echo to the system and obtain the output with cat with no line spamming.
Would be the no-op command right away interruptible? This is sort of usually a prerequisite Even though you might not consider it up front.
NicolasNicolas 10111 bronze badge Insert a comment
I generally just maintain down Ctrl-C. Sooner or later It will sign up among COMMAND's and therefore terminate the though loop. It's possible There's a superior way. Share Increase this reply Observe
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POSIX also specifies that the value of a command that terminated by a signal is greater than 128, but will not appear to specify its exact value like GNU does:
then sent command echo "AT" > /dev/ttyUSB0 following that I often acquired under no circumstances ending loop from cat /dev/ttyUSB0 such as this:
Brendan LongBrendan Extensive 56244 silver badges1616 bronze badges 1 The initial line get more info here is certainly The best solution for just a trivial script that you don't want to spend an excessive amount time on!
The condition is that just after booting into Endless OS, the splash animation appeared properly (as of in Ubuntu) as well as the further Screen is not very clear for being witnessed.
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EDIT: The reason you bought the AT - OK loop, is that you have enabled local terminal echo in each your terminal and to the modem side in the AT interpreter. To turn off echo during the AT interpreter, challenge: ATE0 (that's a zero) as your 1st command.