regex - How to make grep interpret a search expression ignoring all special characters -

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i'd search html string contains characters interpreted grep special characters. there flag or command tell grep interpret characters in search string literal characters, not special characters?

perfect world:

grep --ignorespecial '<a href="/abc/def" class="foo.bar"/>'

yes! use grep -f.

from man grep:

-f, --fixed-strings

interpret pattern list of fixed strings, separated newlines, of matched. (-f specified posix.)

test

$ cat hello <a href="/abc/def" class="foo.bar"/>my href</a>  <a href="/abc/def/ghi" class="foo.bar"/>  $ grep -f '<a href="/abc/def" class="foo.bar"/>' <a href="/abc/def" class="foo.bar"/>my href</a>

or more bash codes:

$ cat hello <a href="/abc/def" class="foo.bar"/>my href</a>  is/ $line ^codes * yeah  $ grep 'this is/ $line ^codes * yeah'   # no -f, no matches $  $ grep -f 'this is/ $line ^codes * yeah' # -f, matches is/ $line ^codes * yeah

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