Its possible use special characters in a shell function name?

Question

I have to create the function in shell script, that function name must contain the special characters. like

 >()
 {
 echo 1ドル 2ドル
 }

Here my function name is >, If its possible how can I give, Like above I tried that But it will through the error

• jofel: This is probably an XY problem. Why do you need a function called >?
• Bhuvanesh: @jofel I need to add the function in bashrc file, when redirection symbol is occur on my terminal window I need to call that function.
• jofel: We are getting closer. Can you elaborate more? Do you need this for debugging? bash accepts only one argument after > so why do you use 1ドル and 2ドル? The answer to your actually question is probably actually no, but it is not yet clear what you really want to achieve.
• terdon: Please edit your question and explain what your final objective is. What exactly do you want to achieve with this function? Calling a function > is not a solution, if you explain what you are trying to do, we might be able to help you find another way.
• mirekphd: Learning is like the sky... it never ends.;)

Answer 1

Most shells restrict the name of functions to contain only characters that don't need to be quoted, which excludes >.

Even in the few shells that allow > as a function name (I only know of zsh), defining a function called > would only have an effect if you called > as a command (which would require quoting it, i.e. running \> or ">" or '>'). It would not change how redirection works.

None of the usual shells have a way to configure what happens if some subsequent part of the script performs a redirection. If you need that kind of things, a shell is not nearly a flexible enough language. But there's probably a better way to solve whatever problem you're trying to solve — and quite possibly one that can be solved in a shell script.

Answer 2

The > has a special meaning in the shell, it's a redirection operator, see the manpage:

[n]> file Redirect standard output (or n) to file.

The name of a function can contain only letters (a-z or A-Z), digit (0-9) or the underscore character (_). Also is must not begin with a digit. (see Function Definition Command and Name)