Question

我的文本文件只有1行，但有2G字符。

我需要在文件中找到一些内容，但是在任何编辑器中都无法打开该行 - 无论是在Unix上，还是在我将其ftp到我的PC上时......

是否有快速/简单的方法来插入换行符，例如，每120个字符？

Answer 1

Fold命令执行此操作，因此如果要在120之后换行..

fold -w120 fie > newfile

Answer 2

sed 's/\(.\{120\}\)/\1\n/g' file.txt

如果您需要创建新文件，则只需重定向输出：

sed 's/\(.\{120\}\)/\1\n/g' file.txt > new_file.txt

按照每行4个字符的示例

[fotanus@thing ~]$ cat test.txt 
qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq
[fotanus@thing ~]$ sed 's/\(.\{4\}\)/\1\n/g' test.txt > a.txt
[fotanus@thing ~]$ cat a.txt 
qqqq
qqqq
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Answer 3

你可以尝试这一行：

 sed -r 's/.{120}/&\n/g' file

如果您想将更改写回原始文件：

sed -ir 's/.{120}/&\n/g' file

例如：

文件有100个s，每12个字符添加一个换行符：

kent$  cat file                   
ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss


kent$  sed -r 's/.{12}/&\n/g' file
ssssssssssss
ssssssssssss
ssssssssssss
ssssssssssss
ssssssssssss
ssssssssssss
ssssssssssss
ssssssssssss
ssss

Answer 4

如果你不介意创建另一个文件。在bash上使用linux对此进行了测试。这里blah.out是输入文件

while read -r -d '' -n 120 record; do echo $record; done<blah.out > blah2.out

如何将周期性换行符插入到具有1个令人难以置信的长行的文件中

4 个答案: