on the xo-4 and intel I use the following to get storage devices
ls -lav /dev |grep brw| grep disk| gawk 'NR==1' |gawk --field-separator=' ' '{
print $10 }'
but on rpi2 this yields
brw-rw---- 1 root disk 7, 0 Mar 8 18:30 loop0brw-rw---- 1 root disk
7, 1 Dec 31 1969 loop1brw-rw---- 1 root disk 7, 2 Dec 31 1969
loop2brw-rw---- 1 root disk 7, 3 Dec 31 1969 loop3brw-rw---- 1 root
disk 7, 4 Dec 31 1969 loop4brw-rw---- 1 root disk 7, 5 Dec 31
1969 loop5brw-rw---- 1 root disk 7, 6 Dec 31 1969 loop6brw-rw---- 1
root disk 7, 7 Dec 31 1969 loop7brw-rw---- 1 root disk 179, 0 Dec 31
1969 mmcblk0brw-rw---- 1 root disk 179, 1 Dec 31 1969
mmcblk0p1brw-rw---- 1 root disk 179, 2 Dec 31 1969 mmcblk0p2brw-rw----
1 root disk 179, 3 Dec 31 1969 mmcblk0p3brw-rw---- 1 root disk 1, 0
Dec 31 1969 ram0brw-rw---- 1 root disk 1, 1 Dec 31 1969 ram1brw-rw----
1 root disk 1, 2 Dec 31 1969 ram2brw-rw---- 1 root disk 1, 3 Dec
31 1969 ram3brw-rw---- 1 root disk 1, 4 Dec 31 1969 ram4brw-rw---- 1
root disk 1, 5 Dec 31 1969 ram5brw-rw---- 1 root disk 1, 6 Dec 31
1969 ram6brw-rw---- 1 root disk 1, 7 Dec 31 1969 ram7brw-rw---- 1
root disk 1, 8 Dec 31 1969 ram8brw-rw---- 1 root disk 1, 9 Dec 31
1969 ram9brw-rw---- 1 root disk 1, 10 Dec 31 1969 ram10brw-rw---- 1
root disk 1, 11 Dec 31 1969 ram11brw-rw---- 1 root disk 1, 12 Dec 31
1969 ram12brw-rw---- 1 root disk 1, 13 Dec 31 1969 ram13brw-rw---- 1
root disk 1, 14 Dec 31 1969 ram14brw-rw---- 1 root disk 1, 15 Dec 31
1969 ram15brw-rw---- 1 root disk 8, 0 Dec 31 1969 sdabrw-rw---- 1
root disk 8, 1 Dec 31 1969 sda1
is there a reliable algorithm to identify sd cards, usb thumb drives or hdd
drives? _______________________________________________
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