How to rename a file from command line ???
 

i'm workin on a dhcp server. i copied dhcpd.conf.sample to /etc. then i deleted /etc/dhcpd.conf because it's emply. now i want to rename /etc/dhcpd.conf.sample to /etc/dhcpd.conf ...i have GNOME installed but i was only wondering if there is a way to do that from command line.
thanks

Yes, on command line:
mv /etc/dhcpd.conf.sample /etc/dhcpd.conf

"i'm workin on a dhcp server. i copied dhcpd.conf.sample to /etc. then i deleted /etc/dhcpd.conf because it's emply. now i want to rename /etc/dhcpd.conf.sample to /etc/dhcpd.conf ...i have GNOME installed but i was only wondering if there is a way to do that from command line."

You rename a file using the mv command. When you mv a file to a different name in the same directory then mv simply renames the file. See:
man mv

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Steve Stites