How can I rename a file name in J language?

Question

I want to change a file's name from test.csv to new.csv, but I can't find it how

Can anyone help me on this?

Thank you!

Answer 1

Using files.ijs (automatically loaded)

'newname' frename 'oldname'

or

Using OS command with shell:

 shell'mv oldname newname'

There are also some other ways but, I think, most are deprecated.