check_port_access.sh
#!/bin/bash
if [ x$1 = x ] || [ x$2 = x ]; then echo "Usage: $0 SERVER PORT"; exit 1; fi
SERVER=$1; PORT=$2
echo "quit" | telnet $SERVER $PORT 2>/dev/null |grep "Escape character is" >/dev/null && echo "OK" || echo "Not OK"
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