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<p><FONT class=normalfont><B><font color=blue>sed中如何替换出新行来</font></B></FONT><BR><FONT class=smallfont color=#ff9900>2004-04-23 15:18 pm</FONT><BR><FONT class=normalfont>作者：作者<br>来自：Linux知识宝库<br>联系方式：无名<br><br>操作系统 SunOS 5.9 sun4u sparc SUNW,Ultra-250<br>
原文件名test仅一行<br>
hellohellohello<br>
<br>
要求结果：<br>
hello<br>
hello<br>
hello<br>
<br>
我使用<br>
sed 's/hello/hello^M/g' test #^M为ctrl_V ctrl_M<br>
不能实现，请问有何错误<br>
<br>
<br>
<br>
sed是以行为处理单位的.<br>
随便处理一下吧:<br>
cat tt|sed 's/hello/hello@/g'|tr '@' ''<br>
<br>
版主真是信手捻来皆成贴啊<br>
<br>
感谢感谢，回答得太快太好了<br>
看来仅有sed是无法生成新行的，必须tr的帮助<br>
<br>
问的是经典问题.<br>
<br>
斑竹，要我有一行，为abcdefghijklmnopqrstuvwxy<br>
按照每五个字符就换行怎么做？<br>
<br>
用awk处理一下吧.<br>
<br>
如果使用VI的话<br>
:%s/...../&^M/g<br>
注意：^M是由ctrl_v ctrl_m产生的<br>
<br>
如果使用sed的话<br>
sed 's/(.....)/1@/g' file | tr '@' ''<br>
如果想每m个字符换行<br>
sed 's/(.{m,m})/1@/g' file | tr '@' ''<br>
献丑了<br>
<br>
bjchenxu 回答的不错.<br>
<br>
<br>
没有版主的提示，也就没有这个答案，呵呵<br>
再次感谢valentine<br>
<br>
<br>
再减少几个字吧，呵呵<br>
<br>
如果使用sed的话<br>
sed 's/...../&@/g' file | tr '@' ''<br>
如果想每m个字符换行<br>
sed 's/.{m,m}/&@/g' file | tr '@' ''<br>
<br>
本贴为我想出的本主题的答案：不用tr也能解决问题<br>
<br>
原文件名test，仅一行<br>
hellohellohello<br>
<br>
要求结果：<br>
hello<br>
hello<br>
hello<br>
<br>
答案：<br>
我edit一个脚本文件<br>
sedfile<br>
内容为<br>
s/hello/<br>
&/g<br>
<br>
运行命令<br>
sed -f sedfile test即可增加新行<br>
<br>
真是vi高手，我虽然不是高手，但是我喜欢vi<br>
<br>
bjchenxu 精神可嘉啊.<br>
不过这样更符合要求一些:<br>
sedfile<br>
内容改为<br>
s/hello/&<br>
/g<br>
<br>
这样算是彻底的sed答案了.<br>
哈哈,俺也学到新东西了.好象&用起来比()的子表达式形式简单啊.不过,不太好理解.<br>
也谢谢bjchenxu .<br>
<br>
<br>
[这个贴子最后由valentine在 2002/08/20 09:30am 编辑]<br>
<br>
更准确的答案在这里,(看来俺开始回答的草率了些,不过tr的方法也是一种思路)<br>
ksh:<br>
sed 's/hello/&^J/g' test<br>
or<br>
sed 's/hello/hello^J/g' test<br>
<br>
^J的输入是ctrl+V ctrl+J<br>
Bourne shell:<br>
<br>
sed 's/hello/&<br>
/g' test<br>
<br>
后是回车.<br>
<br>
<br>
怪哉<br>
此方法在solaris 9的csh中不行，但是在bash下却可以<br>
<br>
另外，在bash中，可以直接回车，不用ctrl_v + ctrl_j,hehe<br>
<br>
Bourne shell也是回车.我忘了写了,现在加上了.<br>
csh俺一直不喜欢.<br>
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