Unsure how to change Blast hit coverage in Blastall unix program

Question

[ajl412860]

Salutations Community

Need some help with changing a parameter on BLAST for a project I am working on. The question I am answering is,

"Does ....... happen when we require that a blast hit covers at least xx% of the target sequence?" So my question is how to change this parameter in the Blastall command line in unix.

[Ram]

You may need to elaborate a bit. What you're saying makes sense to you, but lacks context for readers here.