sed command

[Erol KAHRAMAN]

It is a simple question but i can not find the answer :(

i need to split 45% in 45 and % with sed command. i am trying;
$ cat t.txt
45%

$ sed 's/(\d)\%/1/' t.txt
$ sed -e 's/(\d)\%/1/' t.txt

$ sed 's/(.*)\%/1/' t.txt
$ sed -e 's/(.*)\%/1/' t.txt

what is wrong with my reg-exp definition ?

[Dennis Handly · Accepted solution]

You are using some foreign devil reg-exp??

$ sed 's/\([0-9]\)%/\1 %/g' t.txt

[AwadheshPandey]

sed 's/\%/\ %/g' t.txt > newt.txt

[Erol KAHRAMAN]

thx for answers