修改fedora 10源后出现的问题

我参照着http://www.linuxdiyf.com/bbs/thread-66533-1-6.html中的做法修改了fedora 10的yum源，接着运行yum update后，给出了下面的提示：属性错误: Error parsing '\nhttp://download.fedora.redhat.com/pub/fedora/linux/updates/10/i386/\nhttp://mirrors.usc.edu/pub/linux ... dora/linux/updates/10/i386/\nhttp://mirrors.cat.pdx.edu/fedora/linux/updates/10/i386/\nhttp://ftp.iij.ad.jp/pub/linux/fedora/updates/10/i386/\nftp://ftp.iij.ad.jp/pub/linux/fedora/updates/10/i386/\nhttp://mirror.aarnet.edu.au/pub/fedora/linux/updates/10/i386/\nhttp://mirror.internode.on.net/pub/fedora/linux/updates/10/i386/\nhttp://gulus.usherbrooke.ca/pub/distro/fedora/linux/updates/10/i386/\nhttp://mirror.karneval.cz/pub/linux/fedora/linux/updates/10/i386/\nhttp://sunsite.mff.cuni.cz/MIRRO ... .com/linux/updates/10/i386/\nhttp://ftp-stud.hs-esslingen.de/pub/fedora/linux/updates/10/i386/\nhttp://fedora.tu-chemnitz.de/pub/linux/fedora/linux/updates/10/i386/\nhttp://mirror.fraunhofer.de/down ... dora/linux/updates/10/i386/\nhttp://ftp.uni-bayreuth.de/linux/fedora/linux/updates/10/i386/\nhttp://ftp.funet.fi/pub/mirrors/ ... dora/linux/updates/10/i386/\nftp://ftp.free.fr/mirrors/fedora.redhat.com/fedora/linux/updates/10/i386/\nhttp://limestone.uoregon.edu/ftp/fedora/linux/updates/10/i386/\nhttp://fedora.mirror.iweb.ca/updates/10/i386/\nftp://ftp.cse.buffalo.edu/pub/Linux/fedora/linux/updates/10/i386/\nhttp://mirror.cc.vt.edu/pub/fedora/linux/updates/10/i386/\nhttp://mirrors.tummy.com/pub/fed ... dora/linux/updates/10/i386/\nhttp://mirrors.kernel.org/fedora/updates/10/i386/\nhttp://www.gtlib.gatech.edu/pub/fedora.redhat/linux/updates/10/i386/\nhttp://ftp.linux.ncsu.edu/pub/fedora/linux/updates/10/i386/\nhttp://ftp.iij.ad.jp/pub/linux/fedora/updates/10/i386/\nftp://ftp.iij.ad.jp/pub/linux/fedora/updates/10/i386/\nhttp://ftp.yz.yamagata-u.ac.jp/pub/linux/fedora/linux/updates/10/i386/\nhttp://ftp.rhnet.is/pub/fedora/linux/updates/10/i386/\nhttp://mirror.pacific.net.au/linux/fedora/linux/updates/10/i386/': URL must be http, ftp, file or https not ""
我该怎么办，原文件也没有备份！