Error when Linux executes sh script: syntax error: bad FD number

Today, when using the WCET analyzed by Chronos, there is an error:

: Syntax error: Bad fd number

This error occurs when executing the SH script and when opening the file
solution:
after consulting the data, it is possible that SH is linked to dash rather than bash, so you only need to check the link
execute command

ls -l /bin/sh

Results:


if the above results are obtained, continue to execute the command:

sudo mv /bin/sh /bin/sh.orig
sudo ln -s /bin/bash /bin/sh

Check again and you should get the correct results

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