Provided by: hmmer_3.1b2-2_amd64 
NAME
hmmfetch - retrieve profile HMM(s) from a file
SYNOPSIS
hmmfetch [options] <hmmfile> <key>
(retrieves HMM named <key>)
hmmfetch -f [options] <hmmfile> <keyfile>
(retrieves all HMMs listed in <keyfile>)
hmmfetch --index [options] <hmmfile>
(indexes <hmmfile> for fetching)
DESCRIPTION
Quickly retrieves one or more profile HMMs from an <hmmfile> (a large Pfam database, for example).
For maximum speed, the <hmmfile> should be indexed first, using hmmfetch --index. The index is a binary
file named <hmmfile>.ssi. However, this is optional, and retrieval will still work from unindexed files,
albeit much more slowly.
The default mode is to retrieve a single profile by name or accession, called the <key>. For example:
% hmmfetch Pfam-A.hmm Caudal_act
% hmmfetch Pfam-A.hmm PF00045
With the -f option, a <keyfile> containing a list of one or more keys is read instead. The first
whitespace-delimited field on each non-blank non-comment line of the <keyfile> is used as a <key>, and
any remaining data on the line is ignored. This allows a variety of whitespace delimited datafiles to be
used as <keyfile>s.
When using -f and a <keyfile>, if hmmfile has been indexed, the keys are retrieved in the order they
occur in the keyfile, but if hmmfile isn't indexed, keys are retrieved in the order they occur in the
hmmfile. This is a side effect of an implementation that allows multiple keys to be retrieved even if
the <hmmfile> is a nonrewindable stream, like a standard input pipe.
In normal use (without --index or -f options), <hmmfile> may be '-' (dash), which means reading input
from stdin rather than a file. With the --index option, <hmmfile> may not be '-'; it does not make sense
to index a standard input stream. With the -f option, either <hmmfile> or <keyfile> (but not both) may
be '-'. It is often particularly useful to read <keyfile> from standard input, because this allows use
to use arbitrary command line invocations to create a list of HMM names or accessions, then fetch them
all to a new file, just with one command.
By default, fetched HMMs are printed to standard output in HMMER3 format.
OPTIONS
-h Help; print a brief reminder of command line usage and all available options.
-f The second commandline argument is a <keyfile> instead of a single <key>. The first field on each
line of the <keyfile> is used as a retrieval <key> (an HMM name or accession). Blank lines and
comment lines (that start with a # character) are ignored.
-o <f> Output HMM(s) to file <f> instead of to standard output.
-O Output HMM(s) to individual file(s) named <key> instead of standard output. With the -f option,
this can result in many files being created.
--index
Instead of retrieving one or more profiles from <hmmfile>, index the <hmmfile> for future
retrievals. This creates a <hmmfile>.ssi binary index file.
SEE ALSO
See hmmer(1) for a master man page with a list of all the individual man pages for programs in the HMMER package. For complete documentation, see the user guide that came with your HMMER distribution (Userguide.pdf); or see the HMMER web page ().
COPYRIGHT
Copyright (C) 2015 Howard Hughes Medical Institute.
Freely distributed under the GNU General Public License (GPLv3).
For additional information on copyright and licensing, see the file called COPYRIGHT in your HMMER source
distribution, or see the HMMER web page ().
AUTHOR
Eddy/Rivas Laboratory
Janelia Farm Research Campus
19700 Helix Drive
Ashburn VA 20147 USA
http://eddylab.org