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change fastq header

i have a fastq file that have headers like "@HWI-ST916:209:XXXX:2:1101:1104:1915 1:N:0:", Now i want to convert them like "@HWI-ST916:209:XXXX:2:1101:1104:1915/1"

how can i do it?

thanks in advance

fastq
• 3,874 views • link
updated by Pierre Lindenbaum Pierre Lindenbaum • written by reza reza

2 answers

You could use sed: 

sed 's/ 1:N:0:/\/1/g' inputfile
• 0 views • link
written by Sej Modha Sej Modha 
cut -d ' ' -f 1 input.fastq
• 0 views • link
written by Pierre Lindenbaum Pierre Lindenbaum

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