srf_list(1) [debian man page]

srf_list(1)							   Staden io_lib						       srf_list(1)

NAME

       srf_list - Lists and/or counts the contents of an SRF file

SYNOPSIS

       srf_list  [options] srf_archive ...

DESCRIPTION

       srf_list  lists	the  filenames	held  within one or more SRF container.  To simply count the contents rather than list them specify the -c
       option. Note that when in count-only mode if an index is present it will be used to determine the number of entries in the index and  hence
       sequences  in the SRF file. The index cannot be used when listing the filenames however as the index itself does not contain the full file-
       names.

       Note that it is not possible to count sequences matching certain patterns or with specific flags set. srf_info is a  more  general  purpose
       tool that may cover this.

OPTIONS

       -c     Counts sequences instead of listing them. Note that this may be substantially faster than listing if an index exists.

       -v     Verbose mode. This gives summary count information per file rather than just the total at the end.

       -l     Long  format. When listing sequence names this also provides information on the position in the archive and the size of the sequence
	      specific data block and the size of the shared data block header.

EXAMPLES

       To count the total number of sequences in several SRF files:

	   srf_list -c *.srf

       To produce a "fofn" (file of filenames) for an SRF file:

	   srf_list foo.srf > foo.fofn

AUTHOR

       James Bonfield, Wellcome Trust Sanger Institute

								   September 29 						       srf_list(1)

MTBL_INFO(1)															      MTBL_INFO(1)

NAME

       mtbl_info - display information about an MTBL file

SYNOPSIS

       mtbl_info FILE [FILE]...

DESCRIPTION

       mtbl_info(1) displays the following information about the MTBL files specified on the command line.

       file name -- the name of the MTBL file.

       file size -- the total size of the MTBL file, in bytes.

       index bytes -- the total number of bytes and proportion of the total file size consumed by the index.

       data block bytes -- the total number of bytes and proportion of the total file size consumed by data blocks.

       data block size -- the maximum size of an uncompressed data block.

       data block count -- the total number of data blocks.

       entry count -- the total number of key-value entries.

       key bytes -- the total number of bytes that all keys in the file would occupy if stored end-to-end in a byte array with no delimiters.

       value bytes -- the total number of bytes that all values in the file would occupy if stored end-to-end in a byte array with no delimiters.

       compression algorithm -- the algorithm used to compress data blocks. Possible values are "none", "snappy" and "zlib".

       compactness -- a rough metric comparing the total number of bytes in the key-value entries with the total size of the MTBL file. It is
       calculated as (file size) / (key bytes + value bytes), and thus takes into account the gains of data block compression and prefix key
       compression against the overhead of the index, trailer, and data block offset arrays.

								    05/29/2012							      MTBL_INFO(1)