[Nexus 6P Q&A, Help & Troubleshooting] trevorcobb:
Following the link I posted above, i learned how to get a partition listing without using parted.

root@angler:/dev/block/platform/soc.0/f9824900.sdhci # ls -al by-name
lrwxrwxrwx root root 1970-04-24 07:44 DDR -> /dev/block/mmcblk0p8
lrwxrwxrwx root root 1970-04-24 07:44 aboot -> /dev/block/mmcblk0p10
lrwxrwxrwx root root 1970-04-24 07:44 abootbak -> /dev/block/mmcblk0p16
lrwxrwxrwx root root 1970-04-24 07:44 apdp -> /dev/block/mmcblk0p22
lrwxrwxrwx root root 1970-04-24 07:44 boot -> /dev/block/mmcblk0p34
lrwxrwxrwx root root 1970-04-24 07:44 cache -> /dev/block/mmcblk0p38
lrwxrwxrwx root root 1970-04-24 07:44 cmnlib -> /dev/block/mmcblk0p25
lrwxrwxrwx root root 1970-04-24 07:44 cmnlibbak -> /dev/block/mmcblk0p27
lrwxrwxrwx root root 1970-04-24 07:44 devinfo -> /dev/block/mmcblk0p17
lrwxrwxrwx root root 1970-04-24 07:44 dpo -> /dev/block/mmcblk0p28
lrwxrwxrwx root root 1970-04-24 07:44 frp -> /dev/block/mmcblk0p41
lrwxrwxrwx root root 1970-04-24 07:44 fsc -> /dev/block/mmcblk0p29
lrwxrwxrwx root root 1970-04-24 07:44 fsg -> /dev/block/mmcblk0p18
lrwxrwxrwx root root 1970-04-24 07:44 hyp -> /dev/block/mmcblk0p6
lrwxrwxrwx root root 1970-04-24 07:44 hypbak -> /dev/block/mmcblk0p15
lrwxrwxrwx root root 1970-04-24 07:44 keymaster -> /dev/block/mmcblk0p24
lrwxrwxrwx root root 1970-04-24 07:44 keymasterbak -> /dev/block/mmcblk0p26
lrwxrwxrwx root root 1970-04-24 07:44 keystore -> /dev/block/mmcblk0p40
lrwxrwxrwx root root 1970-04-24 07:44 limits -> /dev/block/mmcblk0p19
lrwxrwxrwx root root 1970-04-24 07:44 metadata -> /dev/block/mmcblk0p33
lrwxrwxrwx root root 1970-04-24 07:44 misc -> /dev/block/mmcblk0p39
lrwxrwxrwx root root 1970-04-24 07:44 modem -> /dev/block/mmcblk0p1
lrwxrwxrwx root root 1970-04-24 07:44 modemst1 -> /dev/block/mmcblk0p20
lrwxrwxrwx root root 1970-04-24 07:44 modemst2 -> /dev/block/mmcblk0p21
lrwxrwxrwx root root 1970-04-24 07:44 msadp -> /dev/block/mmcblk0p23
lrwxrwxrwx root root 1970-04-24 07:44 oem -> /dev/block/mmcblk0p36
lrwxrwxrwx root root 1970-04-24 07:44 oeminfo -> /dev/block/mmcblk0p31
lrwxrwxrwx root root 1970-04-24 07:44 persist -> /dev/block/mmcblk0p32
lrwxrwxrwx root root 1970-04-24 07:44 persistent -> /dev/block/mmcblk0p42
lrwxrwxrwx root root 1970-04-24 07:44 pmic -> /dev/block/mmcblk0p7
lrwxrwxrwx root root 1970-04-24 07:44 pmicbak -> /dev/block/mmcblk0p11
lrwxrwxrwx root root 1970-04-24 07:44 recovery -> /dev/block/mmcblk0p35
lrwxrwxrwx root root 1970-04-24 07:44 rpm -> /dev/block/mmcblk0p5
lrwxrwxrwx root root 1970-04-24 07:44 rpmbak -> /dev/block/mmcblk0p14
lrwxrwxrwx root root 1970-04-24 07:44 sbl1 -> /dev/block/mmcblk0p2
lrwxrwxrwx root root 1970-04-24 07:44 sbl1bak -> /dev/block/mmcblk0p12
lrwxrwxrwx root root 1970-04-24 07:44 sdi -> /dev/block/mmcblk0p3
lrwxrwxrwx root root 1970-04-24 07:44 sec -> /dev/block/mmcblk0p9
lrwxrwxrwx root root 1970-04-24 07:44 ssd -> /dev/block/mmcblk0p30
lrwxrwxrwx root root 1970-04-24 07:44 system -> /dev/block/mmcblk0p43
lrwxrwxrwx root root 1970-04-24 07:44 tz -> /dev/block/mmcblk0p4
lrwxrwxrwx root root 1970-04-24 07:44 tzbak -> /dev/block/mmcblk0p13
lrwxrwxrwx root root 1970-04-24 07:44 userdata -> /dev/block/mmcblk0p44
lrwxrwxrwx root root 1970-04-24 07:44 vendor -> /dev/block/mmcblk0p37