This example shows a typical analysis pipeline for 454. Data is from SRR058098.
You need to set the environment variable $usearch to the name (or path) for your usearch binary file. The bash script assumes that the FASTQ files, barcodes and sintax reference database are stored in a directory called ../data. Output is written to a directory called ../out which is deleted and re-build. I suggest making a project directory, say ex_hmp, with sub-directories named data and scripts. Put the ex_hmp.bash script in the scripts sub-directory and execute it from there.
Download commands and data
Reads and barcodes: right-click on ex_hmp_data.tar.gz and click Save As. Use tar -zxvf *.tar.gz to extract.
Sintax reference database: right-click on rdp_16s_v16.fa.gz and click Save As. Use gunzip *.gz to extract.
Bash script: select all text below (ctrl+A) and copy/paste into a text editor, or right-click on ex_hmp.bash and click Save As.