在Linux中，如何去除ASCII文件中的所有高位，而保留其余位？ -与ISTRIP类似，但带有文件

Question

I have some old wordstar files I want to be able to read, I don't care about formatting but I want the ascii. Wordstar had the nasty habit of setting the high bit to mean certain things (end of a text word) and really using only the bottom 7 bits for character representation.

I know I could write a program to do this, but can't the shell do this with tr or sed or something.

Also there is an ISTRIP property on communication devices that does this but I don't know how to apply it to a file.

I want to read a character, do a logical and with \\o177 on the value of the character, and then write out the character.

Answer 1

Yes, tr can do this:

LC_ALL=C tr '\200-\377' '\000-\177'

Here's an example:

$ printf '\xE8\xE5\xEC\xEC\xEF world' | LC_ALL=C tr '\200-\377' '\000-\177'
hello world