Jul 29, 2017 · Keyboard set to "cat mode" Ask Question Asked 7 years, 7 months ago. Modified 4 years, 8 months ago.

I wrote a shell script that uses cat and tr commands to generate a file. My shell script looks like #!/bin/bash printf "generating random file > plaintext \n" cat -v | tr "a-z" "b-y" < plaintext > generatedtext On executing the script, it doesn't terminate the cat command and when I've CTRL + Z to stop the shell script

When the cat command is running, the terminal is in canonical input mode.This means, in short, that the terminal's line discipline is handling line editing, and is responding to all of the special characters configured for the terminal (viewable and settable with the stty command).

If I start unpacking it with cat myfile.tar.bz2 | tar -xj, it may unpack correctly or fail with "Unexpected EOF", depending on what is faster. How to "cat and follow" a file, i.e. output content of the file to stdout, but don't exit on EOF, instead keep subsribed to that file and continue outputting new portions of the data, exiting only if the ...

Jul 12, 2017 · I have a scale that continuously send data via serial port, 2 times per second. The only reliable way on reading this data happened to be cat command. The following works: cat /dev/ttyUSB0 But the problem with cat is that, as it doesn't receive an EOF, it continues retrieving data. I've also tried head, read and tail.

Feb 15, 2021 · Is there a command to output a large file and follow on directly in the shell stdout? I am aware of less +F or I could simply use tail with an ultimately high n like tail -f -n1000000 if the file is

Jun 4, 2019 · nb: that trick still relies on all the other writers to close the pipe in order for the cat to return. If another process has opened the pipe with eg. exec 7>fifo and keeps the fd 7 open, the cat <>fifo <fifo will still block, but not when trying to open the pipe, but when trying to …

Jan 1, 2015 · Runaway cat commands were always a problem when a long ASCII file was dumped at the slow output device and the the entire file placed in the device driver output buffer. Ctrl-O would start the flush of the buffer and a follow up Ctrl-O would toggle off the flush so the cat could be read at normal speed.

Sep 8, 2023 · You are looking at thermal zones. The type acpitz is a generic ACPI thermal zone; only the developer of the ACPI firmware of your system knows for sure what it indicates, if anything.

Sep 7, 2021 · In generate mode, ddrescue does not know how the image file came about (by ddrescue, by dd, by something else), so it makes the assumption that any binary zero area might have been skipped over previously. So if you have areas with all-zero data on your disk, it might attempt to re-read those, and only skip over areas that have non-zero data.