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Editorial Team
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Asked: 2026-05-14T03:06:06+00:00

I have an application that runs the a command as below: <command> <switches> >&

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I have an application that runs the a command as below:

<command> <switches> >& /dev/null

I can configure <command>, but I have no control over <switches> . All the output generated by this command goes to /dev/null. I want the output to be visible on screen or redirected to a log file.

I tried to use freopen() and related functions to reopen /dev/null to another file, but could not get it working.

Do you have any other ideas? Is this possible at all?

Thanks for your time.

PS: I am working on Linux.

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1 Answer

  1. Editorial Team

    Since you can modify the command you run you can use a simple shell script as a wrapper to redirect the output to a file.

    #!/bin/bash
"$@" >> logfile

    If you save this in your path as capture_output.sh then you can add capture_output.sh to the start of your command to append the output of your program to logfile.

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