Weird ? symbol coming through-sending text file

Shell Programming and Scripting
1

Hi All,

When I am trying to send a text file through Unix,I get a weird symbol in the .txt file. The symbol is ? in a box (square)....which is making the file unloadable. Please help me with the solution.

Thanks in advance
Gopi

2

Please tell us something about your computer and the data:
What Operating System and version are you using?

uname -a # Blotting anything confidential with X's

What Shell are you running:

echo "${SHELL}"

Assuming that the problem is in every record, please post the output from this command which is designed to make unprintable characters visible:

head -3 filename.txt | sed -n l      # Again blotting anything confidential with X's

99% of the time funny characters come from Microsoft platforms. Is Microsoft involved in this problem?

At a technical level, please detail the process trying to send a text file through Unix mentioning any database engines or other relevant detail.