processing multiple fastq files with cutadapt I have DNA sample from 5 pools, having 25 fastq files each. I am running cutadapt to remove the primers using this command 
cutadapt -g ACTTAAGTGTATGTAAACTTCCGACTTCAACTG A7_S7_R1_001.fastq -o sb_A7_S7_R1_001.fastq --discard-untrimmed
However, this is too time consuming.  I tried my hand at writing shell script

for file in /dir/*
do
  cmd cutadapt -g ACTTAAGTGTATGTAAACTTCCGACTTCAACTG "$file" &gt;&gt; results.out
done


But it is not running . 
Can someone help.
Thanks
Try this one

for file in /dir/*
do
  cutadapt -g ACTTAAGTGTATGTAAACTTCCGACTTCAACTG "$file" &gt;&gt; results.out
done


Also you have omitted --discard-untrimmed from the original command. If you want that as well along with everything to run in parallel:

for file in /dir/*
do
  cutadapt -g ACTTAAGTGTATGTAAACTTCCGACTTCAACTG --discard-untrimmed "$file" -o "`basename -s .fastq $file`_out.fastq" &amp;
done