Question 4
- Character frequency analysis
$ perl -n -E 'say foreach /(.)/g' path.txt | \
sort | uniq -c
54310 *
131328 E
130816 N
131327 S
130816 W
$ perl -n -E 'say foreach /(.)/g' path.txt | \
sort | uniq -c
54310 *
131328 E
130816 N
131327 S
130816 W