■sedコマンドをパイプでつなぐこと

$ cat file |
	  filter1 |
	  filter2 |
	 while read LINE
	 do
	 	command
	 	......
	 done
	 
	 
$ cat file |
	sed -e "s/OldText1/NewText1/" -e "s/OldText2/NewText2/" |
	while read LINE
	do
		command
		......
	done