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火宅之貓

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Feb 23, 2001, 12:30:29 AM2/23/01
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我從http://infosec.cis.nctu.edu.tw/Course/NS_2000/hw3.html

下載 unixserver.c和 client.c在 unix 下用gcc compiler

如下：
# gcc unixser.c
Undefined first referenced
symbol in file
socket /var/tmp/ccEJQiQy.o
accept /var/tmp/ccEJQiQy.o
bind /var/tmp/ccEJQiQy.o
setsockopt /var/tmp/ccEJQiQy.o
listen /var/tmp/ccEJQiQy.o
ld: fatal: Symbol referencing errors. No output written to a.out
collect2: ld returned 1 exit status
#

# gcc unixcli.c
Undefined first referenced
symbol in file
socket /var/tmp/ccfQfD8N.o
inet_addr /var/tmp/ccfQfD8N.o
connect /var/tmp/ccfQfD8N.o
ld: fatal: Symbol referencing errors. No output written to a.out
collect2: ld returned 1 exit status
#

關於socket的function全找不到：現在我改下 gcc -lsocket unixser.c

server這邊的程式就正常了，但是client 那邊~~
# gcc -lsocket unixcli.c
Undefined first referenced
symbol in file
inet_addr /var/tmp/cct2G6re.o (symbol belongs to impl
icit dependency /usr/lib/libnsl.so.1)
ld: fatal: Symbol referencing errors. No output written to a.out
collect2: ld returned 1 exit status
#

怎麼會沒有 inet_addr 這個function（將 1.1.1.1 換成ulong）

請有經驗的高手指教一下~~~


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