Commands tagged telnet (11)
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show a zoomable world map
12telnet mapscii.me -
Almost same output with fewer typing... OP had a great idea : BOFH !!! Show Sample Output
6telnet towel.blinkenlights.nl 666 2>/dev/null |tail -2 -
Gets a BOFH excuse from the BOFH excuse server (towel.blinkenlights.nl port 666), and passes it through sed and tr to get rid of telnet connection stuff. Show Sample Output
5telnet towel.blinkenlights.nl 666 | sed "s/=== The BOFH Excuse Server ===//" | tr -d '\n' && echo -
You are stuck with testing a tcp port using telnet, and must kill the telnet session from another terminal... Or, press ctrl+5 and write close/quit to force the current connection to close.. Show Sample Output
2telnet somehost 1234, <ctrl+5> close -
Check if TCP port is reacheable Show Sample Output
2Test-NetConnection -ComputerName example.com -Port 443 -
sends commands specified in $commandfile to the telnet-server specified by $telnetserver. to have newlines in $commandfile interpreted as ENTER, save the file in CR+LF (aka "Windows-Textfile") format. if you want to save the output in a separate file, use:
nc $telnetserver 23 < $commandfile > $resultfile1nc $telnetserver 23 < $commandfile -
I'm flat-out surprised that minecraft directory services require servers install multiple modifications to their server code, when the directories could fetch this information on their own. Show Sample Output
1(echo -e '\xfe'; sleep 1) |telnet -L $HOSTIP 25565 2>/dev/null |awk -F'\xa7' '$2 {print "users: "$2"/"$3;}' -
-z: Specifies that nc should just scan for listening daemons, without sending any data to them -u: Use UDP instead of the default option of TCP. Show Sample Output
0nc -z <IP> <TCP port> OR nc -zu <IP> <UDP port> -
Super fast way to ftp/telnet/netcat/ssh/ping your loopback address for testing. The default route 0.0.0.0 is simply reduced to 0. Show Sample Output
0telnet 0 <port> -
This command telnet and and looks for a line starting with "SSH" - works for OpenSSH since the SSH banner is something like "SSH-2.0-OpenSSH_6.0p1 Debian-4+deb7u3". Then it triggers an action accordingly. It can be packed as a script file to echo 0/1 indicating the SSH service availability:
if [[ "$(sleep 1 | telnet -c <host> <port> 2>&1 | grep '^SSH')" == SSH* ]]; then echo 1; else echo 0; fi;Alternative uses: Trigger an action when server is UP (using &&):[[ "$(sleep 1 | telnet -c <host> <port> 2>&1 | grep '^SSH')" == SSH* ]] && <command when up>Trigger an action when server is DOWN (using ||):[[ "$(sleep 1 | telnet -c <host> <port> 2>&1 | grep '^SSH')" == SSH* ]] || <command when down>0$if [[ "$(sleep 1 | telnet -c <host> <port> 2>&1 | grep '^SSH')" == SSH* ]]; then <command when up>; else <command when down>; fi; -
If you don't have telnet, you can use the bash built-in tcp pipes.
-1cat < /dev/tcp/towel.blinkenlights.nl/23
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