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21 questions
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1 vote
1 answer
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I'm writing a python library called linuxpy which supports V4L2. One of the features is being able to open de V4L2 device in non blocking mode (O_NONBLOCK) to be cooperative with python async/await. I ...
Tiago Coutinho's user avatar
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0 votes
1 answer
158 views

https://man7.org/linux/man-pages/man7/pty.7.html in the "UNIX 98 pseudoterminals" it is said that ptsname can be used (and then open), but this function accepts file descriptor. i tried to ...
Michael Quad's user avatar
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1 vote
1 answer
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I tried this, I'll keep the list short: IFS=$'\n' pkgs=( go gcc make node ) installPkgs() { brew install $1 } export -f installPkgs parallel -j 0 installPkgs ::: ${pkgs[@]} This didn'...
Nickotine's user avatar
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1 vote
1 answer
12k views

I call an async service that takes ~80 seconds to respond. I run: curl -v -X POST https://hostname.com/service/v2/predict \ -H 'x-api-key: somekey' \ -H 'x-request-id: longfiles' \ -H "...
Franck Dernoncourt's user avatar
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1 answer
104 views

I have some files stored on a virtual machine that I'm downloading onto my PC. There are approximately 1 million files and I have been using the following command: scp vm_user@IP:/home/vm_user/...
dollar bill's user avatar
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5 votes
4 answers
4k views

How to watch for sysfs file changes (like /sys/class/net/eth0/statistics/operstate) and execute a command on content change? inotify does not work on sysfs I don't want to poll. I want to set a ...
Zeta.Investigator's user avatar
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3 votes
2 answers
2k views

I have a asynchronous while loop that restarts processes until some condition is met. This look something like this: (while [ "$check_condition" -eq 1 ]; do ./async_command done) & ....
N. Krh's user avatar
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4 votes
1 answer
654 views

From the paper on io_uring, the submission ring contains indices into a submission array, where the submission event itself is stored. The documentation explains this layer of indirection as follows: ...
perpetual_check's user avatar
  • 211
4 votes
1 answer
758 views

I'm trying to achieve this while condition; do var=value1 ### update value every 5s while sleep 5; do var=value2 done ### ... [ rest of code ] done The problem here is that the script will ...
Belka h.j's user avatar
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4 votes
1 answer
2k views

I have a single board appliance that runs Debian 10 on a chunk of flash. UBIFS is used, and is split into two volumes: an ro roots, and an rw /var. I have found that under power cycling/reset ...
Travis Griggs's user avatar
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1 vote
1 answer
420 views

We are using HP-UX Itanium version B.11.31 and this server is used for running Sybase database version ASE15.7. I would like to know how to enable Asynchronous IO at Operating System level. I went ...
Learning_DBAdmin's user avatar
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1 answer
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I was trying to use a linux command repeatedly and I decided to use bash scripting. The command is curl and it has blue screen given to the target web server. I was doing this as a pentester in my ...
Hasan's user avatar
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0 votes
1 answer
516 views

I have to write a lot of data to a pipe. Can I use the Linux calls io_submit/io_getevents for writing to Named Pipes or it is defined only for regular files. I tried finding any document which ...
Rishi Agrawal's user avatar
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2 votes
1 answer
719 views

I have asked what "asynchronous" means a while ago for interrupts. Now I have the same question but for running shell commands and for cancelling threads. From Bash manual If a command is ...
Tim's user avatar
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3 votes
1 answer
1k views

I'm trying to run a few commands asynchronously on a login script (.bash_profile). When I open a new terminal, I see messages like this. They also show up when I log onto a system over SSH. Last ...
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