Cháu xin lỗi, cháu hiểu nhầm đầu bài.
Vì thằng tr nó chỉ cho chuyển 2 set có cùng cỡ nên cháu chữa cháy như sau ạ:
sed -e 's/\o003/\o003\o012/g' test > out.txt

Duy Hiếu
On 10/01/2010 06:11 PM, Duy-Hieu Bui wrote:
> Tôi tìm ra cách này:
> 
> cat test | tr "\003" "\n" > out.txt
> 
> Duy Hiếu
> On 10/01/2010 04:40 PM, Duy-Hieu Bui wrote:
>> Xin hỏi là "ETX" là ký tự có mã bao nhiêu (trong bảng ASCII).
>> Tôi nghĩ có thể dùng lệnh tr để thay thế nó bằng ký tự \n.
>>
>> chúc vui
>> On 10/01/2010 08:59 AM, Nguyen Viet Ha wrote:
>>> Chào cả nhà!
>>>
>>> Vẫn tiếp tục việc này, làm thế nào để tìm kiếm và thay thế các
>>> non-printable character trong một file văn bản nhỉ? Ví dụ tôi có 1
>>> file mà các đoạn kết thúc bằng ký tự ETX (end of text), giờ tôi
>>> muốn thêm \n vào sau ký tự ETX (end of text) thì thế nào nhỉ.
>>>
>>> Hơi vụn vặt một tí :) Cảm ơn cả nhà.
>>>
>>>
>>>
>>>
>>>
>>>
>>> 2010/9/30 MinhHoang To <[email protected]>
>>>
>>>> Ah ve viec co dong trang o dau thi minh thay cai PATTERN no co them cai lua
>>>> chon OFFSET
>>>>
>>>>
>>>> Read standard input if FILE is -.  Each PATTERN may be:
>>>>
>>>>        INTEGER
>>>>               copy up to but not including specified line number
>>>>
>>>>        /REGEXP/[OFFSET]
>>>>               copy up to but not including a matching line
>>>>
>>>>        %REGEXP%[OFFSET]
>>>>               skip to, but not including a matching line
>>>>
>>>>        {INTEGER}
>>>>               repeat the previous pattern specified number of times
>>>>
>>>>        {*}    repeat the previous pattern as many times as possible
>>>>
>>>>        A line OFFSET is a required `+' or `-' followed by a positive
>>>> integer.
>>>>
>>>>
>>>>
>>>>  2010/9/30 MinhHoang To <[email protected]>
>>>>
>>>>>
>>>>>  csplit [OPTION]... FILE PATTERN...
>>>>>
>>>>>
>>>>>
>>>>> Cai regular expression cho 1 blank line ( cai PATTERN trong truong hop nay
>>>>> ) thi dung nhu cai parameter ban Bao danh vao
>>>>>
>>>>> http://www.faqs.org/docs/abs/HTML/regexp.html
>>>>>
>>>>>
>>>>> --
>>>>> Minh Hoang TO
>>>>> eXoPlatform SAS, tang 8, building 18, Thai Ha, Ha Noi
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> Minh Hoang TO
>>>> eXoPlatform SAS, tang 8, building 18, Thai Ha, Ha Noi
>>>>
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>>>
>>>
>>>
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>>
> 

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