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linux bash test connection to host and port

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Tame Tortoise answered on August 10, 2021 Popularity 5/10 Helpfulness 2/10

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answer linux bash test connection to host and port

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linux bash test connection to host and port

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## check for tcp port ##
## need bash shell ##
(echo >/dev/tcp/{host}/{port}) &>/dev/null && echo "open" || echo "close"
(echo >/dev/udp/{host}/{port}) &>/dev/null && echo "open" || echo "close"
(echo >/dev/tcp/www.cyberciti.biz/22) &>/dev/null && echo "Open 22" || echo "Close 22"
(echo >/dev/tcp/www.cyberciti.biz/443) &>/dev/null && echo "Open 443" || echo "Close 443"

Popularity 5/10 Helpfulness 2/10 Language shell

Source: www.cyberciti.biz

Tags: bash connection host linux port shell

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Tame Tortoise

Contributed on Aug 10 2021

Tame Tortoise

0 Answers Avg Quality 2/10

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