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The merge.files command will concatenate multiple files and output the result to a new file. This command is useful for merging multiple fasta-formatted sequence files, 454 quality files, group files, name files, or anything else.

To run the merge.files command you need to provide the input files separated by hyphens as well as the name file that the contents of those files should be written to. The merging occurs in the order that you provide the input files. The following example demonstrates how to use the command:

mothur > merge.files(input=fileA-fileB-fileC, output=fileABC)

To merge SFF files you can simply use this command using 454's executable:

sfffile -o combined.sff infile1.sff infile2.sff


  • 1.40.3 - Bug Fix: Not finding input files. #438