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expect scrits exits before excuting without interact

expect scrits exits before excuting without interact

expect scrits exits before excuting without interact


I see the following behaviour for the piece of code given below:

set def_router_cmd {def_router=`route -n | grep ^|awk '{print \$2}'`}
set pingcmd {ping -c 3 $def_router}

send "$def_router_cmd\r"
send "$pingcmd \r"
puts "The output is '$expect_out(buffer)'."

Now output is nothing as commented out 'interact'

Can anybody tell why it is not executing the commands?


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