abbrev_path

#!/usr/bin/awk -f

BEGIN { 
    FS="/";
    OFS="/";
}
{
    if (NF > 3 && length($0) > 30) {
        rem = 30 - length($1) - length($(NF - 1)) - length($NF) - (NF - 1);
        len = rem / (NF - 3);
        if (len < 3) {
            len = 3;
        }
        for (i = 2; i < NF - 1; i++) {
            $i = substr($i, 1, len - 2) "..";
        }
    }
    print;
}