wrapping text not exceeding 80 characters

Shell Programming and Scripting
1

I have a file where the text might exceed 80 characters. I want to have the maximum text lengths to be 80, and cut text from a space.

I written an awk script below but does not seem to work very well

{
    gsub("\t"," ")
    $0 = line $0
    while (length <= WIDTH) {
        line = $0
        more = getline
        gsub("\t"," ")
        if (more)
            $0 = line " " $0
        else
            $0 = line
            break
    }
    while (length >= WIDTH) {
        print substr($0,1,WIDTH)
        $0 = substr($0,WIDTH+1)
    }
    line = $0 " "
}

END { print }
2

Have you tried this:

cut -c1-80 File
3

or man fold

4

Brilliant