What if you had to use if frequently.. simple put it in shell program,
and allow it to either read the given file or from the stream, like wc does.
man bash|col -b > bash.txt
$ wc bash.txt
4910 37273 260193 bash.txt
$ cat bash.txt |wc
4910 37273 260193
the below program does it 'occurrences'
#!/bin/bash
#program: occurrences
file=${1:--}
cat $file | sed -e 's/[^a-zA-Z0-9.]/ /g' | xargs | tr ' ' '\n' | sort | uniq -c | sort -nr -k1,2
cat $file | sed -e 's/[^a-zA-Z0-9.]/ /g' | xargs | tr ' ' '\n' | sort | uniq -c | sort -nr -k1,2
$ cat bash.txt | occurrences
2969 the
1501 is
948 to
944 of
868 a
620 and
..
..
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