目前很多企业单位正在构架自己的Intranet,FTP服务器是其中的一个服务支持,有很多单位购置了基于UNIX平台的计算机,为了在网上能够提供FTP服务支持,专门购置基于UNIX平台的FTP Server软件,其实在基于UNIX平台的计算机系统中,采取一定的技术方法,就可以建立自己的FTP Server,实现网上文件上下载服务,无须再购置专门的软件,和乐而不为之呢?下面就其建立过程阐述如下:
1. 确定FTP Server的共享目录
为FTP Server建立一个FTP工作目录,在此设定为/home/ftp
2. 编写FTP Server初始设置的Shell程序(setup)
用编辑工具(如vi)编写一个Shell程序,用于对系统进行设置。
#!/bin/sh
case $# in
0) ftphome="`grep '^ftp:' /etc/passwd cut -d: -f6`"
;;
1) if [ "$1" = "start" ]; then
ftphome="`grep '^ftp:' /etc/passwd cut -d: -f6`"
else
ftphome=$1
fi
;;
*) echo "Usage: $0 [anon-ftp-root]"
exit 1
;;
esac
if [ -z "${ftphome}" ]; then
echo "$0: ftphome must be non-null"
exit 2
fi
if [ "${ftphome}" = "/" -o "${ftphome}" = "/usr" ]; then
echo "$0: ftphome must not be / or /usr"
exit 2
fi
if [ ! -d ${ftphome} ]; then
mkdir ${ftphome}
fi
if [ ! -d ${ftphome}/usr/bin ]; then
mkdir -p ${ftphome}/usr/bin
fi
cp /usr/bin/ls ${ftphome}/usr/bin
chmod 111 ${ftphome}/usr/bin/ls
chown root ${ftphome}/usr/bin
chmod 555 ${ftphome}/usr/bin
if [ -r ${ftphome}/bin ]; then
mv -f ${ftphome}/bin ${ftphome}/Obin
fi
ln -s usr/bin ${ftphome}
if [ ! -d ${ftphome}/usr/lib ]; then
mkdir -p ${ftphome}/usr/lib
fi
if [ ! -d ${ftphome}/etc ]; then
mkdir -p ${ftphome}/etc
fi
cp /usr/lib/ld.so /usr/lib/ld.so.1 ${ftphome}/usr/lib
for lib in libc libdl libintl libw libnsl libsocket \
nss_nis nss_nisplus nss_dns nss_files
do
cp /usr/lib/${lib}.so.1 ${ftphome}/usr/lib
rm -f ${ftphome}/usr/lib/${lib}.so
ln -s ./${lib}.so.1 ${ftphome}/usr/lib/${lib}.so
done