我有一个冗长的字符串，我需要在每个时间戳实例之前添加换行符。
03:38:11,03/07/2017,node,cpu,user,sys,idle,intr/s,ctxt/s,0,0,0,9,91,0,1,0,24,75,0,total,0,17,83,2370,3574,1,0,3,4,
93,1,1,10,4,86,1,total,7,4,89,2922,4653,03:39:11,03/07/2017,node,cpu,user,sys,idle,intr/s,ctxt/s,0,0,4,25,71,0,1,5
,16,79,0,total,4,21,75,2487,3876,1,0,0,3,97,1,1,1,1,98,1,total,1,2,98,2880,4728,03:40:11,03/07/2017,node,cpu,user,
sys,idle,intr/s,ctxt/s,0,0,1,30,69,0,1,1,30,69,0,total,1,30,69,3237,4344,1,0,3,49,47,1,1,10,47,43,1,total,6,48,45,
3920,5702,
我需要看到格式化它：
03:38:11,03/07/2017,node,cpu,user,sys,idle,intr/s,ctxt/s,0,0,0,9,91,0,1,0,24,75,0,total,0,17,83,2370,3574,1,0,3,4,93,1,1,10,4,86,1,total,7,4,89,2922,4653,
03:39:11,03/07/2017,node,cpu,user,sys,idle,intr/s,ctxt/s,0,0,4,25,71,0,1,5,16,79,0,total,4,21,75,2487,3876,1,0,0,3,97,1,1,1,1,98,1,total,1,2,98,2880,4728,
03:40:11,03/07/2017,node,cpu,user,sys,idle,intr/s,ctxt/s,0,0,1,30,69,0,1,1,30,69,0,total,1,30,69,3237,4344,1,0,3,49,47,1,1,10,47,43,1,total,6,48,45,3920,5702,
我目前正在尝试使用以下内容：
sed -e 's/^[[:digit:]][[:digit:]]\:[[:digit:]][[:digit:]]/\n&/g' cpu.log
答案 0 :(得分：0)
^行锚点sed仅匹配第一个日期戳。删除它，你应该没事。
要避免对第一个进行重复，可能会按摩脚本以在匹配前需要一些东西（根据您的示例数据，硬编码一个逗号似乎有效）;或者只是对输出进行后处理以删除第一个换行符。
答案 1 :(得分：0)
sed 's/[0-9][0-9]:[0-9][0-9]:[0-9][0-9]/\n&/g'