Error importing file with "\" in the filename about boar HOT 4 OPEN

wrong title line.  Problem character is the Linux path separator '/', not '\' 
as listed.  Repeat steps are correct.

I'm a little bit confused by your last comment. A forward slash "/" is not a 
valid filename character on linux, but backslash is. You probably mean to state 
the issue as it was written originally, right? 

Yes, go with it as originally written.  Specifically, the "steps to recreate" 
is something I put into a shell script and ran multiple times.  When I remove 
the slash characters the script runs without error.

Yup, all valid characters should work.