
[英]How to store a line from expect_out(buffer) to a variable in tcl
[英]How to get the complete output from expect when the internal buffer size of expect_out(buffer) size exceeds?
我不知道发生了什么,但我没有从执行的远程命令获得完整的输出可能因为期望内部缓冲区被执行。
proc SendCommands { Commands } {
global prompt log errlog
foreach element [split $Commands ";"] {
expect {
-re $prompt
{send -- "$element\r"}
}
set outcome "$expect_out(buffer)"
foreach line [split $outcome \n] {
foreach word [regexp -all -inline {\S+} $line] {
if {( [string index [string trimleft $line " "] 0 ] == "%")} {
puts "$outcome"
exit 1
}
}
}
puts "$outcome"
}
}
set timeout 30
foreach host [ split $hosts "\;" ] {
spawn ssh -o "StrictHostKeyChecking no" "$username@$host"
match_max 10000000
expect {
timeout { send_user "\nFailed to get password prompt\n"; exit 1 }
eof { send_user "\nSSH failure for $host\n"; exit 1 }
"*?assword:*"
{
send -- "$password\r"
}
}
expect {
timeout { send_user "\nLogin incorrect\n"; exit 1 }
eof { send_user "\nSSH failure for $host\n"; exit 1 }
-re "$prompt"
{ send -- "\r" }
}
set timeout 300
SendCommands "$Commands"
}
这就是我执行它的方式:
./sendcommand aehj SWEs-elmPCI-B-01.tellus comnet1 "terminal length 0;show int description" "(.*#)$"
我只有当我删除log user 0
时才获得完整的输出,但是当我在上面的fucnction sendcommands中使用puts命令时,我得到了大约90%的结果,最后10%的尾随数据没有显示。
我想的一种方法是在期望中使用正则表达式的否定但它似乎不起作用。
expect {
-re ! $prompt
{puts $expect_outcome(buffer)}
}
编辑:当执行约5或7次时,我获得所有输出一次
经过一番搜索,我提出了这个并且似乎有效,但让我知道任何行为或更好的答案:
然后我设置match_max = 1000
expect {
-re $prompt
{send -- "$element\r"}
full_buffer {
append outcome $expect_out(buffer)
exp_continue
}
}
append outcome $expect_out(buffer)
puts $outcome
但是当我设置match_max = 10000或100时,它再次失败
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