getting error on step 3 (use)

[srkmohmmand]

when i go to quagga directory and use zebra_conf= its give me nothing
$ cd quagga
:/quagga$ zebra_conf=
:/quagga$

when i use command vim /zebra.conf
its open vim file but empty . should i add the samples file to vim

when i try to start zebra and ktrill i gives me error

:~/quagga$ zebra -f
zebra: error while loading shared libraries: libzebra.so.0: cannot open shared object file: No such file or directory
same for ktrill -f

kindly help me to solve this issue.