expect 将数据附加到文件

Question

我制作了脚本：

for server in ${servTab[*]}; do
echo $server >> /var/www/html/df.txt
/usr/bin/expect <<EOF
spawn ssh $server df | grep /appl/ | awk '{print \$4}' | sed s/%// >> /var/www/html/df.txt
expect "password"
send "$pass\r"
expect "$ "
EOF

但在运行之后出现错误：

spawn ssh server-1-lin df | grep /appl/ | awk '{print }' | sed s/%// >> /var/www/html/df.txt
ksh: /var/www/html/df.txt: cannot create [No such file or directory]

只有如下所示才有效：

for server in ${servTab[*]}; do
echo $server >> df.txt
/usr/bin/expect <<EOF
spawn ssh $server df | grep /appl/ | awk '{print \$4}' | sed s/%// >> df.txt
expect "password"
send "$pass\r"
expect "$ "
EOF

但文件 "df.txt" 总是在用户的主目录中创建，无论脚本在哪个目录中。感谢您的帮助。

Answer 1

这里的简单答案是停止使用 expect；它让你的生活变得更加复杂，在目前的情况下没有令人信服的优势。

#!/usr/bin/env bash

# make sure this is an array
servTab=( serverOne serverTwo serverThree )

# Advice: Stop passing passwords around and use SSH agent authentication.
[[ $pass ]] || read -s -r -p "Password: " pass

# open your output file *once*; truncate it when that happens.
exec 3>/var/www/html/df.txt

for server in "${servTab[@]}"; do
  echo "$server" >&3
  SSHPASS="$pass" sshpass -e "$server" df      \
    | awk '/appl/ { gsub(/%/, ""); print  }' \
    >&3
done

expect 将数据附加到文件

expect appends data to a file

bash

expect