Re: [Help-bash] regex for allowed names of bash variables

[address@hidden]

Here is how I check this, it works on all posix shells.

  check_valid_var_name() {
    case "${1:?Missing Variable Name}" in
      [!a-zA-Z_]* | *[!a-zA-Z_0-9]* ) return 3;;
    esac
  }


On 12/31/2015 5:26 AM, Peng Yu wrote:
> Hi, I want to know the exact definition of allowed as bash variable
> names. Could anybody know the regex for it?