You mean srm -rf
And between journalled filesystems and NAND based storage, it probably still won't erase your data.
WTF is srm? I did "man sm" and "man srm" and my system said there's no man page. All Linux (etc.) software is great, because it's GNU and/or open source. All great software comes with at least minimal adequate documentation telling someone what it does, or what it is, and man could not tell me, so the command srm must not exist.
Was this a typo? Or perhaps a Stypo?