looping through multiple files with bash command

Question

I have a file with listed sample names

head sample_id.txt
PD26405a--PD26405b
PD26414a--PD26414d
PD26417a--PD26417b
...

I also have a directory with the outputs of preprocessing step of the program that I am running

cd ./preprocessing_out
ls
PD26405a--PD26405b_allDirichletProcessInfo.txt
PD26405a--PD26405b_alleleFrequencies.txt
PD26405a--PD26405b_loci.txt
PD26405a--PD26405b_master.txt
PD26414a--PD26414d_allDirichletProcessInfo.txt
PD26414a--PD26414d_alleleFrequencies.txt
PD26414a--PD26414d_loci.txt
PD26414a--PD26414d_master.txt
PD26417a--PD26417b_allDirichletProcessInfo.txt
PD26417a--PD26417b_alleleFrequencies.txt
PD26417a--PD26417b_loci.txt
PD26417a--PD26417b_master.txt

sample names in sample_id.txt file matched with file names in preprocessing_out directory.

I want to run my main step script which takes only *_master.txt file. master file looks like this:

cat PD26405a--PD26405b_master.txt
sample  subsample   datafile    cellularity sex cnadatafile indeldatafiles
PD26405a--PD26405b  PD26405a--PD26405b  PD26405a--PD26405b_allDirichletProcessInfo.txt  0.83    female  NA  NA

If I want to run it for the first sample only

it is simply

Rscript --vanilla --slave /projects/dpclust_pipeline.R  -r 1 -d /projects/preprocessing_out -o /projectsdp_out -i /projects/preprocessing_out/PD26405a--PD26405b_master.txt


--r is ("run_sample"), type="integer", default=NULL, help="Sample to run".
--d is the directory that preprocessing results stored
--o is the directory that final output directory
--I is the path to master.txt 

I have more than 150 samples in total and I want to run this Rscript in a bash script with for loop. r=1 refers to first sample (PD26405a--PD26405b), r =2 refers to (PD26414a--PD26414d), and so on.

How can I adjust my code?

Answer 1

To just count up with r as you get another file, you can do something like:

r=1
while read sample
do
  Rscript --vanilla --slave /projects/dpclust_pipeline.R  -r ${r} -d /projects/preprocessing_out -o /projectsdp_out -i /projects/preprocessing_out/${sample}_master.txt
  r=$(( r + 1 ))
done < path/to/sample_id.txt