Question

I knew how to write that bash once, but I can’t figure it out anymore.

As the title says, it should be script aimed at running on a Linux server.

My goal is to do those commands without having it typed again and again.
(I’m chaining the input files in each run.)

bsprun -npes 1 ./a.out file1.txt file2.txt
bsprun -npes 2 ./a.out file1.txt file2.txt
bsprun -npes 3 ./a.out file1.txt file2.txt
bsprun -npes 4 ./a.out file1.txt file2.txt
bsprun -npes 5 ./a.out file1.txt file2.txt
bsprun -npes 6 ./a.out file1.txt file2.txt
bsprun -npes 7 ./a.out file1.txt file2.txt
bsprun -npes 8 ./a.out file1.txt file2.txt

Answer 1

Actually, after reading your description a bit more closely, perhaps you want this:

#!/bin/bash

bsprun -npes "$1" ./a.out "$2" "$3"

chmod +x the script then call it like

./myscript 1 file1.txt file2.txt
./myscript 2 file2.txt file3.txt
./myscript 3 file4.txt file5.txt
...

If your input files change according to a pattern we could make the script a bit smarter but it is unclear what your file names look like.

To get the exact output you posted, put it in a loop like:

#!/bin/bash

for i in {1..8}; do
  bsprun -npes $i ./a.out file1.txt file2.txt
done