Extatrcting only sequnces from fastq.gz

Question

[abdul.karim]

I have a fastq.gz file which contains millions of DNA sequences. IS there fast way to extract only the sequences (one sequence/read per line) and save all the sequences into csv or text file for further analysis?

Answer 1

[Pierre Lindenbaum]

gunzip -c in.fastq.gz | awk '(NR%4==2)' > out.seq