Hi Ehsan, A minor point, to begin with:
> tarfile=file.tar.gz [...] > tar cvf "$tarfile" "$file1" "$file2" Since your file ends in .gz, you probably meant this: tar cvfz "$tarfile" "$file1" "$file2" > I want to untar the original file (i.e. file.tzr.gz) and directly gzip > the untar files (i.e. file1.fastq and file2.fastq) with one command Ok, here it is: tar -vxf file.tar.gz --to-command 'gzip -c > $TAR_FILENAME.gz' See the following link for details: http://www.gnu.org/software/tar/manual/html_section/tar_34.html#SEC85 Regards, Sergey
