ssh connect between two machine

goto.sh

#!/bin/sh 

CONF=$HOME/.local/etc/goto.conf
EXPECT=$HOME/.local/bin/doexpect.sh

function goto {
    
    if [[ "$1" == "-l" || "$1" == "" ]] ;then 
        __list_info 
    else 
        echo "connect to $1 ..." ;
        _connect $1
    fi
}

function __list_info {
    cat $CONF | awk -F"\t" 'BEGIN{OFS="\t"} {print $1,$2"@"$3}'
}

function __list {
    cat $CONF | awk -F"\t" 'BEGIN{OFS="\t"}{print $1}'
}

function __go_complete {
    local curw
    COMPREPLY=()
    curw=${COMP_WORDS[COMP_CWORD]}
    COMPREPLY=($(compgen -W '`__list`' -- $curw))
    return 0
}

function _connect {
    local name=$1
    local line=$(cat $CONF | awk -F"\t" -v name=$name '$1 == name{print $2,$3,$4}' | head -n1)
    echo "connect $line" 
    if [[ "$line" == "" ]]; then 
        echo "$name not in conf file!" 
    else 
        $EXPECT $line
    fi
}

complete -F __go_complete goto

一个机器之间跳转管理的脚本，把机器名/密码等写在一个配置文件里，连接的时候就直接goto跳转到相应机器上。使用的是expect自动输入密码。
上述脚本依赖于两个文件 goto.conf | doexpect.sh
1）doexpect.sh

#!/home/tools/bin/64/expect -f

set user [lindex $argv 0]
set host [lindex $argv 1]
set pwd  [lindex $argv 2]

spawn ssh -l $user $host
expect {
    "no)?" {send "yes\r" ;}
    "password:" { send "$pwd\r";}
}
interact

2）goto.conf格式如下
···
aliasname \t username \t host \t password
···

使用方法：
1）在~/.bashrc或者~/.bash_profile中·source /path/to/goto.sh·
2）直接输入goto 列出可选择的登录机器
3）goto $aliasname 连接到指定的机器上