How To Merge Two Fastq.Gz Files?

 With gzip files, you can simply concatenate the files using `cat`:

cat sample1_R1.gz sample2_R1.gz file3.gz > sample_merge_R1.gz

cat sample1_R2.gz sample2_R2.gz file3.gz > sample_merge_R2.gz
You can also do this:
zcat sample1_R1.gz sample2_R1.gz file3.gz |gzip - > sample_merge_R1.gz

zcat sample1_R2.gz sample2_R2.gz file3.gz |gzip - > sample_merge_R2.gz



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