You can run a ps -ax command and grep for your command's name in the returned output. You could also, if you need intermediate results, write (or append) progress indicators to a log file and check that file's contents.
For example,
Create Directory... write 'S1' to log file
Write First File... write 'S2' to log file
Write 2nd File... write 'S3' to log file
Write last File... write 'Sx' to log file
Read the file and RegEx for /Sx/. Some variant of this should help you. You could also use a SHM drop-box or other in-memory variant.
Don Wilde
"There's more than one level to any answer."