Solaris replacement file content : replace 2012-04-24 with 2012-04-26 in PM_201204240600-201204240700_135
sed 's /' 2012-04-24 '/' 2012-04-26 '/ g' PM_201204240600-201204240700_135.xml> PM_201204260600-201204260700_135.xml
Replace matching text with newlines :
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]