Change path using setenv

Newbie
1

Hello, i am using root but i have installed older version and want to add it to my path

export ROOTSYS=/Users/eyad/samer/programs/root
export PATH=$ROOTSYS/bin:$PATH
export LD_LIBRARY_PATH=$ROOTSYS/lib:$LD_LIBRARY_PATH
export DYLD_LIBRARY_PATH=$ROOTSYS/lib:$DYLD_LIBRARY_PATH

i am using export but i want to make it through setenv.
the syntax should be setenv instead of export what is the right syntax ?

2

There is many examples on the web. For instance this.