• Copy remote file via SSH:

scp <Username>@<Domain-OR-IP>:<File-Name> ./Desktop

• Delete files which are so many returned 'Argument list too long' if using rm :

find  -maxdepth 1 -mindepth 1 -type f -name "filename.*" -delete

• Script to read list of data from file and proceed with operation for each of the data:

for i in $(cat data.txt);do sudo <OPERATION> "$i"; done