正则表达式的一个小问题

Question

bytes packets errs drop fifo colls carrier compressed lo: 20114 136 0 0 0 0 0 0 20114 136 0 0 0 0 0 0

我想用正则表达式匹配 lo 这个部分。。。

完整可用代码如下:

exports.info = function() {
        // read /proc/net/dev
        var fc = fs.readFileSync('/proc/net/dev','utf8'),
            result = {};

        // format file content
        fc = fc.replace(/\s{2,}/g,' ').replace(': ',':').split("\n");

        var columnLine = fc[0].split('|');

        fc[0] = columnLine[columnLine.length - 1];
        columnLine[columnLine.length - 1] = fc[0].substring(0, fc[0].search(/(\b\S+\:.*)/g));
        fc[0] = fc[0].substring(fc[0].search(/(\b\S+\:.*)/g));


        for(var i=0;i<fc.length;i++) {
                if(fc[i]=='') { continue; }
                var receiveCols = columnLine[columnLine.length - 2].split(' '),
                    transmitCols = columnLine[columnLine.length - 1].split(' '),
                    tKey = fc[i].substring(0,fc[i].indexOf(':')),
                    tValue = fc[i].substring(fc[i].indexOf(':') + 1).split(' '),
                    tArr = {}, item;
                while(item = tValue.shift()) {
                        var title = (receiveCols.length>0 ? 'recv' : 'trans') + '_'  + (receiveCols.shift() || transmitCols.shift())
                        tArr[title] = item;
                }

                result[tKey] = tArr;
        }

        return result;

}

Answer 1

/\blo/