The expression is made up of options (which affect overall operation rather than the processing of a specific file, and always return true), tests (whichreturn a true or false value), and actions (which have side effects and return a true or false value), all separated by operators.
Okwu ahụ bụ nhọrọ (nke na-emetụta ọrụ zuru oke karịa nhazi nke faịlụ ọ bụla, ma na-alọghachi mgbe niile), ule (nke na-alọghachite ezi ma ọ bụ ụgha), na omume (nke nwere mmetụta ndị dị na ya na ịghaghachi eziokwu maọbụ uru ụgha), ndị niile na-arụ ọrụ.