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Q&A

Welcome to Software Development on Codidact!

Will you help us build our independent community of developers helping developers? We're small and trying to grow. We welcome questions about all aspects of software development, from design to code to QA and more. Got questions? Got answers? Got code you'd like someone to review? Please join us.

Posts tagged linux

1 child tag

Use for questions about programming on Linux (e.g. about the Linux specific behavior of some code).

This tag doesn't have a detailed wiki yet.

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+4 −0
Q&A How can I schedule a later task in Python?

I want my CLI Python program to schedule a task, and then exit. After some times has passed (say 10 minutes) the task should execute. The task can be a Python method or a shell command, whatever i...

3 answers  ·  posted 1mo ago by matthewsnyder‭  ·  last activity 1mo ago by [Object object]‭

Question linux
71%
+3 −0
Q&A How can a Python program send itself to the background?

Is it possible for a Python program to send itself in the background? For example, on Linux you can do nohup some_cmd & and any program will run in the background. Some programs also support s...

1 answer  ·  posted 1mo ago by matthewsnyder‭  ·  last activity 1mo ago by r~~‭

Question linux
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+1 −2
Q&A How to solve missing JAR files error from Ant

I keep getting this error: Cause: the class org.apache.tools.ant.taskdefs.optional.ssh.SSHExec was not found. This looks like one of Ant's optional components. Action: Check that the ap...

1 answer  ·  posted 1y ago by Megan‭  ·  last activity 1y ago by Megan‭

Question linux
60%
+1 −0
Q&A How to set update-crypto-policies to LEGACY in Dockerfile

So im trying to do RUN update-crypto-policies --set LEGACY in my Dockerfile as I was getting an error "Failed to load certificate from file 'client-rsa.pem':''ee key too small". But when I build...

2 answers  ·  posted 1y ago by Megan‭  ·  last activity 1y ago by Megan‭

Question linux
25%
+0 −4
Q&A Unable to boot from manjaro usb key [closed]

Unable to boot from manjaro usb key it looks like it is due to secure boot how can I do it without disabling the secure boot

0 answers  ·  posted 1y ago by hedibensaid‭  ·  closed 1y ago by Alexei‭

Question linux
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+0 −4
Q&A Unable to boot from popos usb key [closed]

Hi How can I boot from usb key containing popos system without disabling secure boot in bios ? thanks

0 answers  ·  posted 1y ago by hedibensaid‭  ·  closed 1y ago by Alexei‭

Question linux
80%
+6 −0
Q&A Why is this symlink() call returning successfully while apparently failing to create the sym-link?

Summary I'm building an internal system (hardware simulator, using Rust) to help test some Python-based services that talk to hardware. (The services talk to hardware via TTYs.) To trick the Pytho...

1 answer  ·  posted 3y ago by ghost-in-the-zsh‭  ·  last activity 2y ago by ghost-in-the-zsh‭

Question linux
80%
+6 −0
Q&A How kill a child process without read() hanging in the parent process?

There is an external program I'm calling from within my C/C++ program, by using fork() and execl(), and redirecting the stdio with dup2() to be able to read the output from the external program. I...

1 answer  ·  posted 2y ago by sktpin‭  ·  edited 2y ago by Lundin‭

Question linux
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+2 −1
Q&A Hash sum mismatch (only for openjdk-11-jdk)

I was installing Java yesterday. I had faced lot of problem. I had fixed most of them. But I had changed Hash that's what I think. I don't remember which command I had executed since I had executed...

1 answer  ·  posted 2y ago by Anonymous‭  ·  edited 2y ago by Alexei‭

Question xubuntu
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+1 −0
Q&A WARNING: environment variable DISPLAY is not set (netbeans)

I was trying to install Netbeans in Xubuntu. I had installed Netbeans using Snapd. sudo snap install netbeans --classic I was trying to start Netbeans then I got an error which was looking like...

1 answer  ·  posted 2y ago by Anonymous‭  ·  last activity 2y ago by Anonymous‭

Question xubuntu
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+2 −0
Q&A How to start mysql in Manjaro from terminal?

I had installed mysql using the following command sudo pacman -Sy mysql Earlier, I was using Lampp(Xampp for Linux) where I could start using the command /opt/lampp/start start I am not sur...

1 answer  ·  posted 2y ago by deleted user  ·  last activity 2y ago by deleted user

Question linux
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+4 −0
Q&A Is *nix a formal term?

How can one differentiate what is or is not a *nix operating system even if that operating system (or its core/shell/common-utilities) allegedly behaves like any "other" *nix operating system? Is ...

1 answer  ·  posted 2y ago by deleted user  ·  last activity 2y ago by r~~‭

Question linux
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+7 −0
Q&A What are field separators in operating-programming languages (such as Bash)?

The concept of field separator has some private cases in different operating system shells and their utilities (IFS on Bourne shell and derivates, RS on AWK and perhaps more) but I am having troubl...

1 answer  ·  posted 2y ago by deleted user  ·  edited 2y ago by deleted user

Question linux
75%
+4 −0
Q&A How to prompt a user for an expanded variable in Bash?

I work with CentOS operating system and my only shell is Bash. I want to create a script which prompts a user with a question like "What is your web application root?" The user should answer dire...

1 answer  ·  posted 2y ago by deleted user  ·  last activity 2y ago by Someone‭

Question linux
75%
+4 −0
Q&A Unable to `mount` overlayfs in Docker container when inside a LXC with a ZFS pool

Summary/Context I'm currently working to improve performance and throughput of our automation infrastructure, most of which is a combination of Bash/Shell scripts, Python scripts, Docker, Jenkins,...

1 answer  ·  posted 3y ago by ghost-in-the-zsh‭  ·  last activity 3y ago by ghost-in-the-zsh‭

Question linux
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+4 −0
Q&A dig -6 works but dig -4 does not

I can't get a response from IPv4 dig on my server but I can get one from IPv6 dig. See the below output: $ dig +short myip.opendns.com a @resolver1.opendns.com # Doesn't return anything, this used ...

1 answer  ·  posted 3y ago by cobertos‭  ·  last activity 3y ago by Canina‭

Question linux
60%
+1 −0
Q&A How to protect the git respository for a public_html folder on a Linux server?

On a Linux server, if you leave the .git folder unprotected in the public_html folder, its possible that someone could download the folder and then gain access to your files. There are two ways I h...

2 answers  ·  posted 3y ago by Charlie Brumbaugh‭  ·  last activity 3y ago by .                                                .‭

Question linux
75%
+4 −0
Q&A Generate SIGSEGV without undefined behaviour.

In order to test that coredumps are generated and that they contain useful information which can be retreived with gdb I need to generate a SIGSEGV. Or anything else which causes a coredump. The co...

1 answer  ·  posted 3y ago by Estela‭  ·  last activity 3y ago by Lundin‭

Question linux