How to download fasta sequence of my interest from NCBI?

Hi all,
I am trying to download the protein fasta sequence of “HSP listeria monocytogenes” from NCBI. Please suggest how I can download these all sequences using the command line from NCBI. I tried the following command, however it requires a file of accession number but since I have a keyword (HSP listeria monocytogenes) to search and retrieve the sequences in fasta format.
Please help me to find the way in this regard.

epost -db protein -input <Accessions file>  | efetch -format fasta  > <Output file>