Linux Shell : a switch of cat command

Hi,

cat > body
cat > top
cat > button
cat button >> body
cat body >> top

I want replace a line command instead 2 last line of these commands ( 4th & 5th line ) ,I hear about a switch of cat command for this work .
thanks for your guide

I have absolutely no idea what you are talking about.

Could you perhaps be, more specific? I realize that English is quite probably a second language for you, however you'll have to find a better phrasing if you wish any aid from this forum.

Cheers.

i hear about a switch,by that switch we can replace 5 command in above with 1 command ....
it's means we write 1 command and create 3 file and append these together ...

cat > body; cat > top; cat > button; cat button >> body; cat body >> top

There, now it's all on one line.

I want a switch of Cat command for this work ....
i hear about this ,
by this switch we can create 3 file and concat these together
ok ?

Just write a shell script and put it in /bin. You can make it do whatever you want.