[求助]关于expect里的spawn和send

ayybaby

装了tcl与expect，写了个expect小脚本测了下，是用expect来解释的但却找不到spawn和send的，困扰了许久。
请教下大家该如何己解决？

[root@localhost ~]# whereis expect
expect: /usr/bin/expect /usr/lib/expect5.43 /usr/include/expect.h /usr/share/man/man1/expect.1.gz
[root@localhost ~]# cat expect.sh
#/usr/bin/expect

spawn su sysadmin
expect "passwd:"
send "#^Amn[0]\r"

[root@localhost ~]# ./expect.sh
./expect.sh: line 3: spawn: command not found
couldn't read file "passwd:": no such file or directory
./expect.sh: line 5: send: command not found
[root@localhost ~]#

blackold

#!/usr/bin/expect