`select-string` or it's alias `sst`. I find myself filtering collections of objects far more frequently then grepping lines when using powershell.
descriptions() { xargs -I '{}' man -f '{}' ; }
executables() { pkgfile -bl $1 | cut -f 2; } # Arch Linux specific
executables util-linux | descriptions 2> missed | sort | less for (i = 0, j = strlen(s)-1; i < j; i++, j--)
c = s[i], s[i] = s[j], s[j] = c;