Allow nohup background running

[maaaaz]

Hello there,

Currently, on Linux, if you try to run ODD in an unattended way, for instance with nohup, it does not work at all, the following message is returned:

Console input is redirect, maybe it is run inside another host. This could mean that no input will be send/processed.
2025-01-10 20:01:43.705 [WRN] Console input is redirect, maybe it is run inside another host. This could mean that no input will be send/processed.
2025-01-10 20:01:43.751 [ERR] Error processing action
System.UnauthorizedAccessException: Access to the path is denied.
 ---> System.IO.IOException: Bad file descriptor
   --- End of inner exception stack trace ---
   at Interop.ThrowExceptionForIoErrno(ErrorInfo, String, Boolean)
   at Interop.CheckIo(Int64, String , Boolean )
   at Interop.CheckIo(Int32, String , Boolean )
   at System.ConsolePal.Read(SafeFileHandle, Span`1)
   at System.ConsolePal.UnixConsoleStream.Read(Span`1)
   at System.IO.ConsoleStream.Read(Byte[], Int32, Int32)
   at System.IO.StreamReader.ReadBuffer()
   at System.IO.StreamReader.Read()
   at System.IO.SyncTextReader.Read()
   at System.Console.Read()
   at OpenDirectoryDownloader.Command.ProcessConsoleInput(OpenDirectoryIndexer openDirectoryIndexer)
Unhandled exception. System.UnauthorizedAccessException: Access to the path is denied.
 ---> System.IO.IOException: Bad file descriptor
   --- End of inner exception stack trace ---
   at Interop.ThrowExceptionForIoErrno(ErrorInfo, String, Boolean)
   at Interop.CheckIo(Int64, String , Boolean )
   at Interop.CheckIo(Int32, String , Boolean )
   at System.ConsolePal.Read(SafeFileHandle, Span`1)
   at System.ConsolePal.UnixConsoleStream.Read(Span`1)
   at System.IO.ConsoleStream.Read(Byte[], Int32, Int32)
   at System.IO.StreamReader.ReadBuffer()
   at System.IO.StreamReader.Read()
   at System.IO.SyncTextReader.Read()
   at System.Console.Read()
   at OpenDirectoryDownloader.Command.ProcessConsoleInput(OpenDirectoryIndexer openDirectoryIndexer)
   at OpenDirectoryDownloader.Program.Main(String[] args)
   at OpenDirectoryDownloader.Program.<Main>(String[] args)

Could you allow such capacity ?

Cheers!

[KoalaBear84]

Hi,

I have never heard of this. How do you start/use it? What is the purpose?

[maaaaz]

You use it like this nohup <command> & in order to have the command being run without any shell attached.
https://www.digitalocean.com/community/tutorials/nohup-command-in-linux

It is usually used for long-running tasks.

[KoalaBear84]

I've tried reproducing it, but I can't :)

koalabear@DESKTOP-XX:~$ nohup ./OpenDirectoryDownloader --url https://www.falsedoor.com/txt/ &
[1] 27642
koalabear@DESKTOP-XX:~$ nohup: ignoring input and appending output to 'nohup.out'
koalabear@DESKTOP-XX:~$

koalabear@DESKTOP-XXX:~$ cat /etc/os-release
PRETTY_NAME="Ubuntu 22.04.2 LTS"
NAME="Ubuntu"
VERSION_ID="22.04"
VERSION="22.04.2 LTS (Jammy Jellyfish)"
VERSION_CODENAME=jammy
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=jammy

What can I try next?

[maaaaz]

Hello there,

Thanks for trying !

I still can reproduce this:

$ ps -p $$
    PID TTY          TIME CMD
  12345 pts/3    00:00:00 bash

$ bash --version
GNU bash, version 5.2.21(1)-release (x86_64-pc-linux-gnu)

$ cat /etc/os-release
PRETTY_NAME="Ubuntu 24.04.1 LTS"
NAME="Ubuntu"
VERSION_ID="24.04"
VERSION="24.04.1 LTS (Noble Numbat)"
VERSION_CODENAME=noble
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=noble
LOGO=ubuntu-logo

$ wget -nv "https://github.com/KoalaBear84/OpenDirectoryDownloader/releases/download/v3.3.0.3/OpenDirectoryDownloader-3.3.0.3-linux-x64-self-contained.zip"

$ nohup ./OpenDirectoryDownloader --url https://www.falsedoor.com/txt/ &
nohup: ignoring input and appending output to 'nohup.out'

[I PRESS ENTER TWICE HERE]

[2]-  Aborted                 (core dumped) nohup ./OpenDirectoryDownloader --url https://www.falsedoor.com/txt/

$ cat ./nohup.out
Started with PID 99199
URL specified: https://www.falsedoor.com/txt/
Started indexing!
┌─────────────────────────────────────────────────────────────────────────┐
│ KoalaBear84/OpenDirectoryDownloader v3.3.0.3                            │
├─────────────────────────────────────────────────────────────────────────┤
│ Press I for info (this)                                                 │
│ Press S for statistics                                                  │
│ Press T for thread info                                                 │
│ Press U for Save TXT                                                    │
│ Press J for Save JSON                                                   │
├─────────────────────────────────────────────────────────────────────────┤
│ Press ESC or X to EXIT                                                  │
└─────────────────────────────────────────────────────────────────────────┘

Console input is redirect, maybe it is run inside another host. This could mean that no input will be send/processed.
2025-02-22 13:51:06.159 [WRN] Console input is redirect, maybe it is run inside another host. This could mean that no input will be send/processed.
2025-02-22 13:51:06.184 [ERR] Error processing action
System.UnauthorizedAccessException: Access to the path is denied.
 ---> System.IO.IOException: Bad file descriptor
   --- End of inner exception stack trace ---
   at Interop.ThrowExceptionForIoErrno(ErrorInfo errorInfo, String path, Boolean isDirError)
   at Interop.CheckIo(Int64 result, String path, Boolean isDirError)
   at Interop.CheckIo(Int32 result, String path, Boolean isDirError)
   at System.ConsolePal.Read(SafeFileHandle fd, Span`1 buffer)
   at System.ConsolePal.UnixConsoleStream.Read(Span`1 buffer)
   at System.IO.ConsoleStream.Read(Byte[] buffer, Int32 offset, Int32 count)
   at System.IO.StreamReader.ReadBuffer()
   at System.IO.StreamReader.Read()
   at System.IO.SyncTextReader.Read()
   at System.Console.Read()
   at OpenDirectoryDownloader.Command.ProcessConsoleInput(OpenDirectoryIndexer openDirectoryIndexer) in /home/runner/work/OpenDirectoryDownloader/OpenDirectoryDownloader/src/OpenDirectoryDownloader/Command.cs:line 59
Unhandled exception. System.UnauthorizedAccessException: Access to the path is denied.
 ---> System.IO.IOException: Bad file descriptor
   --- End of inner exception stack trace ---
   at Interop.ThrowExceptionForIoErrno(ErrorInfo errorInfo, String path, Boolean isDirError)
   at Interop.CheckIo(Int64 result, String path, Boolean isDirError)
   at Interop.CheckIo(Int32 result, String path, Boolean isDirError)
   at System.ConsolePal.Read(SafeFileHandle fd, Span`1 buffer)
   at System.ConsolePal.UnixConsoleStream.Read(Span`1 buffer)
   at System.IO.ConsoleStream.Read(Byte[] buffer, Int32 offset, Int32 count)
   at System.IO.StreamReader.ReadBuffer()
   at System.IO.StreamReader.Read()
   at System.IO.SyncTextReader.Read()
   at System.Console.Read()
   at OpenDirectoryDownloader.Command.ProcessConsoleInput(OpenDirectoryIndexer openDirectoryIndexer) in /home/runner/work/OpenDirectoryDownloader/OpenDirectoryDownloader/src/OpenDirectoryDownloader/Command.cs:line 59
   at OpenDirectoryDownloader.Program.Main(String[] args) in /home/runner/work/OpenDirectoryDownloader/OpenDirectoryDownloader/src/OpenDirectoryDownloader/Program.cs:line 157
   at OpenDirectoryDownloader.Program.<Main>(String[] args)

Watch out:

• I am using the selfcontained version above.
• try to press "Enter" when you see nohup: ignoring input and appending output to 'nohup.out' as the coredump does not come without interaction.

And by the way, I also just reproduced it with the current latest https://github.com/KoalaBear84/OpenDirectoryDownloader/releases/download/v3.4.0.2/OpenDirectoryDownloader-3.4.0.2-linux-x64-self-contained.zip

Cheers!