---
name: "bamsplitdiv"
section: "1"
platform: "linux"
package: "biobambam2"
version: "2.0.185+ds-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/bamsplitdiv"
---

# bamsplitdiv(1)

split BAM file into a set of BAM files

## NAME

bamsplitdiv - split BAM file into a set of BAM files

## SYNOPSIS

**bamsplitdiv** \[options\]

## DESCRIPTION

bamsplitdiv reads a BAM file via standard input and creates a set of output BAM files containing the alignments in the input. Given a positive natural number  *div* bamsplitdiv will create div files. The alignments in the input file will be distributed to the output files in a round robin type scheme, i.e. entries 0, div, 2div, 3div, etc. will be written to the first output file, 1,div+1,2div+1, 3div+1, etc. to the second etc.

The following key=value pairs can be given:

**div=\<1\>:** number of output files

**prefix=\<filename\>** prefix for the create files. The created files will have names ${prefix}\_000000.bam, ${prefix}\_000001.bam, etc.

**level=\<-1\|0\|1\|9\|11\>:** set compression level of the output BAM file. Valid values are

- \-1:

  zlib/gzip default compression level

- 0:

  uncompressed

- 1:

  zlib/gzip level 1 (fast) compression

- 9:

  zlib/gzip level 9 (best) compression

If libmaus has been compiled with support for igzip (see https://software.intel.com/en-us/articles/igzip-a-high-performance-deflate-compressor-with-optimizations-for-genomic-data) then an additional valid value is

- 11:

  igzip compression

**verbose=\<1\>:** Valid values are

- 1:

  print progress report on standard error

- 0:

  do not print progress report

## AUTHOR

Written by German Tischler.

## REPORTING BUGS

Report bugs to \<germant@miltenyibiotec.de\>

## COPYRIGHT

Copyright © 2009-2013 German Tischler, © 2011-2013 Genome Research Limited. License GPLv3+: GNU GPL version 3 \<http://gnu.org/licenses/gpl.html\>\
 This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.