egrep

[root@riyimei ~]# cat /etc/sysconfig/nfs |egrep -v '^$|^#|^\;'
RPCNFSDARGS=""
RPCMOUNTDOPTS=""
STATDARG=""
SMNOTIFYARGS=""
RPCIDMAPDARGS=""
RPCGSSDARGS=""
GSS_USE_PROXY="yes"
BLKMAPDARGS=""
[root@riyimei ~]#