/Shell/Bash/Linux bash test connection to host and port

Linux bash test connection to host and port

## 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"

Source: cyberciti.biz

Similar codes

1 vote153 views1 answer
Javascript to exe
Shell/Bash
0 vote135 views1 answer
Powershell array pipe foreach
Shell/Bash
0 vote154 views1 answer
Apache Webserver does not show directory listings but 403 - Yosemite
Shell/Bash
0 vote133 views1 answer
Go download all packages
Shell/Bash
12 votes136 views1 answer
What is gist in github
Shell/Bash
0 vote143 views1 answer
How to add the permission in the lampp in ubuntu
Shell/Bash
1 vote126 views1 answer
How to retrieve the address of a Remote REPO
Shell/Bash
1 vote155 views1 answer
Bash split and get last
Shell/Bash
0 vote146 views1 answer
Apt asks for geographic location while installing docker image
Shell/Bash
0 vote148 views1 answer
Youtube video player react native
Shell/Bash