Given the following entry for the shadow password file, $/$etc$/$shadow$,$ on a Linux system. What hash was used to create the hash?

$$6$$CCD$2$A$97$g$KrxIrG$1$Kn$6$gXD$.$EG$5$PYzUsuiPAyt$4$TyMD$4$Idwcd$7$h$2$wJbm$1$wwhc$883$Gclo$102$fQOVyAt$6$uL$7$Gy$4$ieqVWgtkUv$/$