I am doing a unix script using until loop.the idea of my script is it need to continuously verify the url status whether is up or down.when its up, it will exit the loop In my script, i will use c. The colon behind while is interpreded as true, so this is an endless loop. Why is cat /dev/ttyusb0 producing an endless repeat Ask question asked 7 years, 9 months ago modified 3 years, 9 months ago I did a normal merge, but it keeps asking this
# please enter a commit message to explain why this merge is necessary, # especially if it merges an updated upstream into a topic br. I have problem sending at commands to my usb modem Then i tried to debug problem and opened pu. I have os centos linux release 7.6.1810 (core), apache/2.4.6 (centos), redmine v3.4.6 How to store endless stream to file Ask question asked 9 years, 6 months ago modified 9 years, 6 months ago
@terdon, they said it there Since /dev/zero is an endless stream Of course, when reading from a seekable file (instead of a pipe), tail could just seek to the correction position, and read the requested amount, which that strace shows it doing, and the seek even succeeds
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