How can I print lines between those patterns?
By replacing / with \57 records between patterns (and records with those patterns) can be printed.
But please read this before using range expressions.
When used inside an awk regular expression constant, the forward slash character must be escaped to distinguish it from the surrounding delimiters. For example with GNU awk:
$ echo 'foo/bar was here' |...
tr’s arguments are maps of characters: characters are mapped 1:1 in order. In the set of replacements, the last character is repeated as necessary; extra characters are ignored.
tr 5 x