Unanswered Questions
2,958 questions with no upvoted or accepted answers
8
votes
1
answer
644
views
What is the historical reason for using curly braces {} as placeholder in find -exec
Everyone knows find . -exec foo {} \; and at some point stopped thinking about it. But recently I came back to the question that arose when I first learned it:
Why would anyone choose {} as the ...
- 184
7
votes
1
answer
4k
views
anaconda Qt vs system Qt
The anaconda python framework includes its own Qt shared libraries, among other ones. Because of the nature of the framework, it must appear first in the PATH environment variable so its python ...
CommunityBot
- 1
6
votes
0
answers
4k
views
MPI program causes "invalid MIT-magic-cookie-1 key" warning to show
I'm setting up a new development environment that requires high performance computing. I installed mpi and openmpi on this new machine (Ubuntu 20.04), and I wrote the following code in python as a ...
- 61
6
votes
0
answers
2k
views
Execute script on external keyboard connection
EDIT: This is NOT a duplicate because the linked question is about external USB drives, not keyboards. The suggested command udevadm info -a -n sdb does nothing in helping to find the corresponding ...
- 77.8k
5
votes
1
answer
696
views
bash + how to avoiding duplicate entries in authorized_keys (ssh) in bash
Popular methods of adding an ssh public key to a remote host’s authorized_keys file include using the ssh-copy-id command, and using bash operators such as >> to append to the file.
An issue ...
- 4,192
5
votes
0
answers
599
views
Is job-control really meant to be supported in subshells and scripts?
Small premise
I use subshells quite often to perform operations that involve changing the Shell Execution Environment, so as not to affect the main shell. I do it often from an interactive shell, and ...
- 5,573
5
votes
1
answer
583
views
How to create a real copy of file descriptor stdout and stderr without using unbuffer / script / tee just with bash built-ins?
My goal is to duplicate, redirect all output (stdout and stderr) of an
application (apt-get) to a file while retaining the usual behavior of
the application (apt-get), stdout and stderr.
How to ...
- 7,393
5
votes
0
answers
2k
views
Launch background process from sh and close the terminal
How can this be achieved in sh (not bash!)?
nohup sh -c 'helper-bcpy.sh "$0" "$1" "$2" "$3"' "$num" "$full_path" "$log" "$log_finished" >/dev/null &
I would have expected it to send the ...
CommunityBot
- 1
5
votes
1
answer
2k
views
Apart from USR1 and USR2, which signals can I safely use for custom interrupting behavior? (in python)
I have a complex application with USR1 and USR2 already defined as having a well-defined and not replaceable purpose.
There are tons of different signals in linux. Might there be another one (maybe a ...
- 175
5
votes
0
answers
10k
views
rsync only files newer than given date, with --delete
I'm trying to use rsync to backup only the files that have been created or changed
after a certain date. The reason is that on that date, the whole system has been
backed up. However, those global ...
- 61
5
votes
1
answer
2k
views
TOR hidden service not always accessible through cURL. Takes multiple tries
When I try to access a hidden service on TOR using cURL, for some reason I'm not getting access to the site 100% of the time. Many times it returns "curl: (7) Can't complete SOCKS5 connection to 0.0.0....
CommunityBot
- 1
5
votes
1
answer
4k
views
Run git pull from a shell start-up script
I have Raspberry Pi that loads a shell script on start up.
This script runs a python script, boot_camera.py, which is found in a repository.
I Have a server which sends the Raspberry Pi a command ...
CommunityBot
- 1
5
votes
2
answers
2k
views
Bash Script -- ffmpeg not being invoked as expected
I'm working on a bash script to convert my music library to ogg* but executing the right command is somehow eluding me. This is the line that should accomplish it:
ffmpeg -i "${file}" -f flac pipe:1 |...
- 300
5
votes
1
answer
479
views
How to overwrite file residing on ESP at Linux boot
I have a 64-bit dual-boot system running Windows 7 and Linux Mint 17 Cinnamon. I use rEFInd to graphically choose which system to boot.
A little bit about rEFInd:
It is an EFI bootloader.
It uses ...
- 57.9k
5
votes
0
answers
4k
views
FreeBSD: How to start a python script as daemon?
I'm facing an issue with a python file that I'd like to start as a service.
I named my service ocrserver and the script I want to start is in /home/administrator/ocr/ocrserver/init.py with some ...
- 151