通過以TO開頭的每一行來編輯文本文件

Question

我正在嘗試使用sed編輯文本文件。 該文本文件實際上是一條短信，已以.txt格式發送到我的電子郵件中，但是格式不正確。 在此先感謝您的協助。 例如，特定的一行：

TO YOUDate : 06/12/2013 09:52:55 AMHi can u pls pick up some bread from the store. TO :   Contact NameDate : 06/12/2013 10:00:10 AMI can in about 15 minutes. I'm still in a meeting.

上面的幾行表示.txt文件中其余各行的格式。 我希望這些行以TO開頭，並以該行的結尾結束（直到下一個TO）。

像這樣：

TO YOUDate : 06/12/2013 09:52:55 AMHi can u pls pick up some bread from the store.
TO :   Contact NameDate : 06/12/2013 10:00:10 AMI can in about 15 minutes. I'm still in a meeting.

我以為以下命令對我有用，但是找到TO后會創建新行。

sed '/TO/ a\
new line string' myfile.txt

Answer 1

這將在第二次出現TO時插入換行符

sed 's/TO/\nTO/2' myFile.txt

測試：

temp_files > cat myFile.txt
TO YOUDate : 06/12/2013 09:52:55 AMHi can u pls pick up some bread from the store. TO :   Contact NameDate : 06/12/2013 10:00:10 AMI can in about 15 minutes. I'm still in a meeting.
temp_files >
temp_files > sed 's/TO/\nTO/2' myFile.txt
TO YOUDate : 06/12/2013 09:52:55 AMHi can u pls pick up some bread from the store.
TO :   Contact NameDate : 06/12/2013 10:00:10 AMI can in about 15 minutes. I'm still in a meeting.

Answer 2

使用python ：

>>> import re
>>> spl = "TO"
>>> strs = "TO YOUDate : 06/12/2013 09:52:55 AMHi can u pls pick up some bread from the store. TO :   Contact NameDate : 06/12/2013 10:00:10 AMI can in about 15 minutes. I'm still in a meeting."
>>> lis = re.split(r'\bTO\b',strs)[1:]
for x in lis:
    print "{}{}".format(spl,x)
...     
TO YOUDate : 06/12/2013 09:52:55 AMHi can u pls pick up some bread from the store. 
TO :   Contact NameDate : 06/12/2013 10:00:10 AMI can in about 15 minutes. I'm still in a meeting.

Answer 3

sed 's|TO|\nTO|g'

最后一個參數“ g”將全局替換“ TO”。 因此，請確保該消息不包含“ TO”字符串。