/usr/share/doc/flex/examples/manual/strtest.dat is in flex 2.6.4-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | "This is a string"
"The next string will be empty"
""
"This is a string with a \b(\\b) in it"
"This is a string with a \t(\\t) in it"
"This is a string with a \n(\\n) in it"
"This is a string with a \v(\\v) in it"
"This is a string with a \f(\\f) in it"
"This is a string with a \r(\\r) in it"
"This is a string with a \"(\\\") in it"
"This is a string with a \z(\\z) in it"
"This is a string with a \X4a(\\X4a) in it"
"This is a string with a \x4a(\\x4a) in it"
"This is a string with a \x7(\\x7) in it"
"This is a string with a \112(\\112) in it"
"This is a string with a \043(\\043) in it"
"This is a string with a \7(\\7) in it"
"This is a multi-line \
string"
"This is an unterminated string
"This is an unterminated string too
|