Writing/logging errors or warnings from console

Hello. Is there a way to record or write *errors or *warnings from calculix in an output file? Thanks in advance.

You can redirect the console/screen output of your Calculix run to a file:
./ccx deck > output.log
You can then further analyze the output.log file in your favorite editor to inspect the errors or warnings of interest.

Similar advise has already been given in this forum for cases where users wanted to suppress the entire screen output of a Calculix run:
./ccx deck >> /dev/null 2>&1

Thank you - this is exactly what I have used.