I have a startup script line:
pyprogramm >> /dev/null 2>&1 &
Meanings:
>> /dev/null - redirect stdout to null device
2>&1 - redirect stderr to stdout (that is redirected to null device)
but what does the very last & mean?
I started a while loop as follows:
while true; do {command}; sleep 180; done &
Notice the &.
I thought when I killed the terminal, this while loop would stop. But it is still going. It has been hours since I killed the terminal session.
How do I stop this while loop?
Suppose there are 2 tasks t1, t2 which can be executed in a serial way as below:
t1 ; t2
# OR
t1 && t2
Now suppose I forgot to run t2 and t1 is already running; can I add t2 to the pipeline so that it gets executed after t1 finishes?
I know you can suspend a ssh session with ~^z, but is there also a way to background it so that it continues working while you do something else in the local shell?
Sometimes, processes ignore the SIGINT signal sent by Ctrl-C in Bash. For instance, man and vi. Assuming you don't want to google or read the manual on how to exit the running process, is there any key sequence that will always work (without leaving the terminal)?