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使用expect实现ssh自动交互 下面是使用expect实现的自动远端命令执行的脚本ssh-exec： #!/bin/sh # exec expect -- "$0" ${1+"$@"} # ssh-exec host user password command # execute command on remote host exp_version -exit 5.0 set ERR_PERMISSION_DENIED 1 set ERR_DIR_OR_FILE_NOT_EXIST 2 set ERR_TIMEOUT 3 set ERR_CONNECTION_REFUSED 4 set ERR_INVALID_ARGUMENT 5 proc auth_trans {password} { upvar #0 ERR_PERMISSION_DENIED ERR_PERMISSION_DENIED upvar #0 ERR_DIR_OR_FILE_NOT_EXIST ERR_DIR_OR_FILE_NOT_EXIST send "$passwordr" expect { #password not correct "Permission denied, please try again." { exit $ERR_PERMISSION_DENIED } # ...transmission goes after... -re "Is a directory|No such file or directory" { exit $ERR_DIR_OR_FILE_NOT_EXIST } -re "KB/s|MB/s" { set timeout -1 expect eof } } } if {$argc!=2} { send_user "usage: remote-exec command passwordn" send_user " command should be quoted.n" send_user " Eg. remote-exec "ssh ls\; echo done" passwordn" send_user " or: remote-exec "scp /local-file :/remote-file" passwordn" exit $ERR_INVALID_ARGUMENT } set cmd [lindex $argv 0] set password [lindex $argv 1] eval spawn $cmd #timeout in sec, default 10 set timeout 30 expect { #first connect, no public key in ~/.ssh/known_hosts "Are you sure you want to continue connecting (yes/no)?" { send "yesr" expect "password:" auth_trans $password } #already has public key in ~/.ssh/known_hosts "password:" { auth_trans $password } #user equivalence already established, no password is necessary -re "kB/s|MB/s" { set timeout -1 expect eof } -re "Is a directory|No such file or directory" { expect eof exit $ERR_DIR_OR_FILE_NOT_EXIST } "Connection refused" { expect eof exit $ERR_CONNECTION_REFUSED } #connetion error timeout { exit $ERR_TIMEOUT } }
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