I have been looking at sed to insert non-printable characters into text files. The sed(1) manpage states that I should be able to insert octal values by preceding the three character octal value with a backslash. However, my foo apparently isn't strong enough. eg.
$ cat file first line second line FF third line fourth line FF $ sed 's!FF$!\f!' file > output $ cat output first line second line FF third line fourth line FF $ sed 's!FF!\014!' file > output $ cat output first line second line 014 third line fourth line 014 How am I misinterpreting how octal values can be inserted?
