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  • Parharn
    Member
    • Jul 2013
    • 84

    #1

    Number of reads in FASTQ file

    Hi,
    How can I just find out how many reads are there in a fastq file?

    Thanks,
    Parham
  • Wallysb01
    Senior Member
    • Feb 2011
    • 286

    #2
    wc -l file.fastq will give you the number of lines, then you can divide that by four.

    Or you can just run fastqc.

    Comment

    • JackieBadger
      Senior Member
      • Mar 2009
      • 385

      #3
      Or

      grep xxx -c file.fastq

      xxx being some string of characters only found in sequence identifiers

      With MiSeq generated fastq an example would be

      grep @M00 -c file.fastq
      Last edited by JackieBadger; 02-17-2014, 11:34 AM.

      Comment

      • Parharn
        Member
        • Jul 2013
        • 84

        #4
        Thanks guys.

        Comment

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