Remove all comments and empty lines from SAMBA config file

grep -v "[#]" smb.conf |grep -v [\;]|grep -v ^$

Later I'll try the same other ways.

Below are sed script what to make the same:
#cat blank
/^$/d
/^#/d
/^\;/d

And command line:
#sed -f blank smb.conf

Same as befor but in one line:
#sed -e "/^$/d; /^;/d; /^#/d" smb.conf