1  No SPC characters      grep -r " " * | grep -v "raw"
2  No TAB characters      grep -Pr "\t" * | grep -v "raw"
3  No semicolons          grep -r ";" *
4  No parentheses         grep -r "(\|)" * | grep -v "raw"
5  No empty columns       grep -r ",,\|,$" *
6  No Unix line endings   find -exec file {} \; | grep text$ | grep -v "raw"
7  No Latin-1 encoding    find -exec file {} \; | grep ISO-8859 | grep -v "raw"
8  No UTF-8 encoding      find -exec file {} \; | grep UTF-8 | grep -v "raw"
9  Changes between years  diff -r 2013 2014


Tests 6-8 can be combined to identify CSV files that are not ASCII with CRLF:

find -name *.csv -exec file {} \; | grep -v "ASCII text, with CRLF"


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List files with decimals points

grep -rl "\." * | grep -v "raw" | sort