I was wondering if you could solve this Linux Problem.

Write a Bash script called newmv (to replace the Unix command mv) that tries to rename the specified file (using the Unix command mv) if the destination file exists, instead creates an index number (a sort of version number) to append to the destination file. So if I type $ . ewmv a.txt b.txt - but if b.txt already exists, newmv will move the file to b.txt.1 Note that if b.txt.1 already exists, you must rename the file to b.txt.2, and so on, until you can successfully rename the file with a name that does not already exist . If the src and dest files are not specified on the command line exit gracefully with an error message