Line Buffered Cat
Is There a Way to Do Line-Bufferd Cat? for Example, I Want to Watch a Uart Device, and I Only Want to See It's Message When There Is a Whole Line. Can I Do...
is there a way to do line-bufferd cat? For example, I want to watch a UART device, and I only want to see it's message when there is a whole line. Can I do some thing like:
cat --line-buffered /dev/crbif0rb0c0ttyS0
Thanks.
3 Answers
You can also use bash to your advantage here:
cat /dev/crbif0rb0c0ttyS0 | while read line; do echo $line; done
Since the read command reads a line at a time, it will perform the line buffering that cat does not.
No, but GNU grep with --line-buffered can do this. Just search for something every line has, such as '^'.
Pipe it through perl in a no-op line-buffered mode:
perl -pe 1 /dev/whatever
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