programB two> /var/log/programB.log 1> /dev/null

and chose to implement /boot/grub2/ as their GRUB prefix instead of the de-facto /boot/grub/ (and to the history, they did not do this simply because there was a conflicting /boot/grub/ directory on their picture or something, but seemingly "Simply because"

Provided that $COMMAND terminates effectively, It will probably be run all over again. If it fails or is terminated by signal, the loop will conclude.

Will be the no-op command instantly interruptible? This is fairly frequently a requirement Whilst you may not think of it up entrance.

Check the exit status with the command. Should the command was terminated by a signal the exit code is going to be 128 + the sign variety. From your GNU on the internet documentation for bash:

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It appears that evidently what I want will be to pipe into method something which doesn't do something for an indefinite amount of time and isn't going to study stdin. The subsequent techniques do the job:

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I would like to use cat /dev/ttyUSB0 or something similar to monitor serial conversation occurring via my USB-serial adapter. I'm productively capable to website ship serial commands from linux to a serial system throughout the TX wire working with echo "blahblah"

The column that contains this benefit, icmp_req=2 is telling you which ICMP packet this is pertaining to. The ping command manufactures community packets.

To get rid of the outer loop I ordinarily add a slumber command and press CTRL-C some far more periods: even though :; do LONGTIME_COMMAND; slumber one; completed. Remember to see: the colon guiding though is interpreded as Legitimate, so This really is an endless loop.

If i use kermit software to dial a selection anything is effective good in kermit, output is like it should be. I dont understand why reduced degree compose/read through isn't really Performing