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Asked by Priya Last Modified
Answer 
Deepika Agrawal
"Balancing minds, one ledger at a time." "Counting on expertise to balance your knowledge."
I have a bash application that is producing some result, and I'd like to echo the result to either stdout or to a user chosen file. Because I also echo other interactive messages going to the screen, requiring the user to explicitly use the > redirection when he wants to echo the result to a file is not an option (*), as those messages would also appear in the file.
Right now I have a solution, but it's ugly.
if [ -z $outfile ]
then
echo "$outbuf" # Write output buffer to the screen (stdout)
else
echo "$outbuf" > $outfile # Write output buffer to file
fi
I tried to have the variable $outfile to be equal to stdout, to &1 and perhaps something else but it would just write to file having that name and not actually to stdout. Is there a more elegant solution?
(*) I could cheat and use stderr for that purpose, but I think it's also quite ugly, isn't it?
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