使用scp传输和下载文件

#!/usr/bin/expect
set timeout -1
spawn scp A_path B_username@B_IP:B_path
expect {
    "password" {send "$B_password\r";}
    "yes/no" {send "yes\r";exp_continue}
}
expect eof
exi

#!/usr/bin/expect
set timeout -1
spawn scp B_username@B_IP:B_path A_path
expect {
    "password" {send "$B_password\r";}
    "yes/no" {send "yes\r";exp_continue}
}
expect eof
exit

scp.sh: line 3: spawn: command not found
couldn't read file "{": no such file or directory
scp.sh: line 5: syntax error near unexpected token `}'
scp.sh: line 5: `    "password" {send "xxxxxxxxxx\r";}'

chmod +x **.sh
./**.sh

#!/usr/bin/expect -f
spawn ssh username@IP
expect "password:"
send "输入密码"
interact