Use grep -F <TARGET> to search w/o regex parsing. E.g. grep 7.2.1 also matches with 70201, but grep -F 7.2.1 doesn’t.

NOTE: grep -F is equivalent to fgrep but directly calling fgrep is deprecated.

References:

• https://stackoverflow.com/questions/14347722/how-to-grep-exact-literal-string-no-regex