I may prove wrong, but, it appears to me that since you want to append the results, which is necessarily a serial operation, that parallel will not be able to help you.
From: address@hidden [mailto:address@hidden On Behalf Of vijai2007
Sent: Monday, November 07, 2011 11:08 PM
Subject: parallel to gunzip and merge .gz files
I have about 99 files in the file name format:
SRRA_ATCACG_L008_R1_001.fastq.gz to SRRA_ATCACG_L008_R1_099.fastq.gz
I want to unzip and merge them to a single fastq file.
These are from the Illumina CASAVA 1.8.1
How do I do this in GNU parallel?