目前很多企業單位正在構架自己的Intranet,FTP服務器是其中的一個服務支持,有很多單位購置了基於UNIX平台的計算機,為了在網上能夠提供FTP服務支持,專門購置基於UNIX平台的FTP Server軟件,其實在基於UNIX平台的計算機系統中,采取一定的技術方法,就可以建立自己的FTP Server,實現網上文件上下載服務,無須再購置專門的軟件,和樂而不為之呢?下面就其建立過程闡述如下:
1.確定FTP Server的共享目錄
為FTP Server建立一個FTP工作目錄,在此設定為/home/ftp
2.編寫FTP Server初始設置的Shell程序(setup)
用編輯工具(如vi)編寫一個Shell程序,用於對系統進行設置。
#!/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