Analog of fastacmd for blast+

-bash-3.2$ /local/opt/bin/blastdbcmd -help
USAGE
  blastdbcmd [-h] [-help] [-db dbname] [-dbtype molecule_type]
    [-entry sequence_identifier] [-entry_batch input_file] [-pig PIG] [-info]
    [-range numbers] [-strand strand] [-mask_sequence_with numbers]
    [-out output_file] [-outfmt format] [-target_only] [-get_dups]
    [-line_length number] [-ctrl_a] [-version]

DESCRIPTION
   BLAST database client, version 2.2.23+

OPTIONAL ARGUMENTS
 -h
   Print USAGE and DESCRIPTION;  ignore other arguments
 -help
   Print USAGE, DESCRIPTION and ARGUMENTS description;  ignore other arguments
 -version
   Print version number;  ignore other arguments

 *** BLAST database options
 -db <String>
   BLAST database name
   Default = `nr'
 -dbtype <String, `guess', `nucl', `prot'>
   Molecule type stored in BLAST database
   Default = `guess'

 *** Retrieval options
 -entry <String>
   Comma-delimited search string(s) of sequence identifiers:
        e.g.: 555, AC147927, 'gnl|dbname|tag', or 'all' to select all
        sequences in the database
    * Incompatible with:  entry_batch, pig, info
 -entry_batch <File_In>
   Input file for batch processing (Format: one entry per line)
    * Incompatible with:  entry, pig, info
 -pig <Integer, >=0>
   PIG to retrieve
    * Incompatible with:  entry, entry_batch, target_only, info
 -info
   Print BLAST database information
    * Incompatible with:  entry, entry_batch, outfmt, strand, target_only,
   ctrl_a, get_dups, pig, range

 *** Sequence retrieval configuration options
 -range <String>
   Range of sequence to extract (Format: start-stop)
    * Incompatible with:  info
 -strand <String, `minus', `plus'>
   Strand of nucleotide sequence to extract
   Default = `plus'
    * Incompatible with:  info
 -mask_sequence_with <String>
   Produce lower-case masked FASTA using the algorithm IDs specified (Format:
   N,M,...)

 *** Output configuration options
 -out <File_Out>
   Output file name
   Default = `-'
 -outfmt <String>
   Output format, where the available format specifiers are:
                %f means sequence in FASTA format
                %s means sequence data (without defline)
                %a means accession
                %g means gi
                %o means ordinal id (OID)
                %t means sequence title
                %l means sequence length
                %T means taxid
                %L means common taxonomic name
                %S means scientific name
                %P means PIG
                %mX means sequence masking data, where X is an optional comma-
                separted list of integers to specify the algorithm ID(s) to
                diaplay (or all masks if absent or invalid specification).
                Masking data will be displayed as a series of 'N-M' values
                separated by ';' or the word 'none' if none are available.
        For every format except '%f', each line of output will correspond to
        a sequence.
   Default = `%f'
    * Incompatible with:  info
 -target_only
   Definition line should contain target GI only
    * Incompatible with:  pig, info, get_dups
 -get_dups
   Retrieve duplicate accessions
    * Incompatible with:  info, target_only

 *** Output configuration options for FASTA format
 -line_length <Integer, >=1>
   Line length for output
   Default = `80'
 -ctrl_a
   Use Ctrl-A as the non-redundant defline separator
    * Incompatible with:  info