[ixtab]

Some of the event devices (unfortunately not all, and probably not those that you want ) also have symbolic names:

[root@kindle input]# ls -la
drwxr-xr-x    3 root     root           160 Mar 10 18:15 .
drwxr-xr-x   16 root     root          1120 Mar 11 15:15 ..
drwxr-xr-x    2 root     root           100 Mar 10 18:15 by-path
crw-r-----    1 root     root       13,  64 Mar 10 18:15 event0
crw-r-----    1 root     root       13,  65 Mar 10 18:15 event1
crw-r-----    1 root     root       13,  66 Mar 10 18:15 event2
crw-r-----    1 root     root       13,  67 Mar 10 18:15 event3
crw-r-----    1 root     root       13,  68 Mar 10 18:15 event4
[root@kindle input]# ls -la by-path/
drwxr-xr-x    2 root     root           100 Mar 10 18:15 .
drwxr-xr-x    3 root     root           160 Mar 10 18:15 ..
lrwxrwxrwx    1 root     root             9 Mar 10 18:15 platform-soc-audio.1-event -> ../event1
lrwxrwxrwx    1 root     root             9 Mar 10 18:15 platform-whitney-button-event -> ../event2
lrwxrwxrwx    1 root     root             9 Mar 10 18:15 platform-zforce.0-event -> ../event4

Still, that would mean only figuring out what the remaining two are, instead of guessing what all 5 are.