export PATH=$PATH:'/home/j0k3r/ns-allinone-2.35/bin':'/home/j0k3r/ns-allinone-2.35/tcl8.5.10/unix':'/home/j0k3r/ns-allinone-2.35/tk8.5.10/unix'

export LD_LIBRARY_PATH='/home/j0k3r/ns-allinone-2.35/otcl-1.14', '/home/j0k3r/ns-allinone-2.35/lib'

and Still I am getting the same message when ever i open terminal
bash: export: `/home/j0k3r/ns-allinone-2.35/lib,': not a valid identifier