shell sed awk 替换文本内容

Solaris替换文件内容：将PM_201204240600-201204240700_135中2012-04-24替换为2012-04-26

sed 's/'2012-04-24'/'2012-04-26'/g' PM_201204240600-201204240700_135.xml>PM_201204260600-201204260700_135.xml

将匹配文本替换为换行：

rx6600-1#[/tmp/bwztmp]cat a.txt

dabcabcabc

rx6600-1#[/tmp/bwztmp]awk '{gsub(/a/,"\na");print}' a.txt>b.txt

rx6600-1#[/tmp/bwztmp]cat b.txt

d

abc

abc

abc

rx6600-1#[/tmp/bwztmp]