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Host remote.example.net ProxyCommand ssh root@hop perl -MIO::Socket -e "'\$|=1;\$s=IO::Soc +ket::INET->new(shift);if(\$c=fork()){print while(read(\$s,\$_,1)>0);k +ill(2,\$c)}else{print{\$s}\$_ while(read(STDIN,\$_,1)>0)}'" %h:22