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  • sfri14
    Junior Member
    • Aug 2015
    • 2

    #1

    Editing Fasta Label with sed

    Hi all,

    I am very new to using sed/awk and would like some help with deleting the last character of the labels in my fasta file. Currently, my labels are as follows:

    >83_11;size=8364;
    ATTCCAGCTCCAATAGCGTATATTAAAGTTGTTGCAGTTAAAAAGCTCGTAGTTGGATTTCTGGCAGGAGCGACCGGTCA

    And I need the last semi colon removed in order to use Swarm to cluster OTUs.

    >83_11;size=8364
    ATTCCAGCTCCAATAGCGTATATTAAAGTTGTTGCAGTTAAAAAGCTCGTAGTTGGATTTCTGGCAGGAGCGACCGGTCA

    Thanks so much for any help!
  • blancha
    Senior Member
    • May 2013
    • 367

    #2
    sed "s,;$,,g" file.fa > modified_file.fa
    or
    sed -i "s,;$,,g" file.fa

    Comment

    • sfri14
      Junior Member
      • Aug 2015
      • 2

      #3
      Thanks so much - that worked!

      Comment

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