I've installed Repeatscout in the cluster from https://bix.ucsd.edu/repeatscout/. I've also installed TRF and nseg required by the program. I followed the steps:

build_lmer_table -l 16 -sequence ~/file_fasta/od_1000.fa -freq od_1000.freq

 RepeatScout -sequence od_1000.fa -output od_1000_repeats.fa -freq od_1000.freq -l 16

and then I put this command:

cat od_1000_repeats.fa| filter-stage-1.prl >od_1000_repeats_filt1.fa 

but this message appears: bash: filter-stage-1.prl: command not found... Why? It is all correctly installed, I can't understand the problem