I am window user and working on fasta files. I want to correct number of total bases in all sequences.
What do you mean with correct number of bases? Do you mean counting? Or do you want to remove bases?
I mean counting.
you can you this tool for example: https://usegalaxy.eu/root?tool_id=toolshed.g2.bx.psu.edu/repos/devteam/fasta_compute_length/fasta_compute_length/1.0.1