Test connectivity to hosts in file on port 22 with curl command

up vote
2
down vote

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Id like to plug the following "curl" command into a bash script and run it against a hostfile of ip addresses then display the output as success or failure in an output file.

curl -v telnet 10.10.10.10:22

Is this possible?

edited Jun 21 at 18:44

Tomasz

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asked Jun 21 at 18:41

mylan

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up vote
2
down vote

favorite

Id like to plug the following "curl" command into a bash script and run it against a hostfile of ip addresses then display the output as success or failure in an output file.

curl -v telnet 10.10.10.10:22

Is this possible?

edited Jun 21 at 18:44

Tomasz

8,01552560

asked Jun 21 at 18:41

mylan

163

add a commentÂ |Â

up vote
2
down vote

favorite

Id like to plug the following "curl" command into a bash script and run it against a hostfile of ip addresses then display the output as success or failure in an output file.

curl -v telnet 10.10.10.10:22

Is this possible?

edited Jun 21 at 18:44

Tomasz

8,01552560

asked Jun 21 at 18:41

mylan

163

Id like to plug the following "curl" command into a bash script and run it against a hostfile of ip addresses then display the output as success or failure in an output file.

curl -v telnet 10.10.10.10:22

Is this possible?

edited Jun 21 at 18:44

Tomasz

8,01552560

asked Jun 21 at 18:41

mylan

163

edited Jun 21 at 18:44

Tomasz

8,01552560

edited Jun 21 at 18:44

Tomasz

8,01552560

edited Jun 21 at 18:44

Tomasz

8,01552560

asked Jun 21 at 18:41

mylan

163

asked Jun 21 at 18:41

mylan

163

asked Jun 21 at 18:41

mylan

163

add a commentÂ |Â

2 Answers
2

active

oldest

votes

up vote
2
down vote

Using the bash builtin to check for open ports may work as well:

#!/bin/bash

host_file=/path/to/file.txt
out_file=/path/to/out.txt

while read -r ip; do
 if timeout 5 bash -c "cat < /dev/null >/dev/tcp/$ip/22"; then
 echo -e "$iptSuccess"
 else
 echo -e "$iptFailure" 
 fi >> "$out_file"
done < "$host_file"

answered Jun 21 at 19:13

Jesse_b

10.2k22658

I didn't know this one. Is it documented anywhere? Does it also work with IPv6?
â€“Â Tomasz
Jun 21 at 19:55

1

@Tomasz: It's documented in the bash reference manual 3.6 Redirections. I'm unsure if it works with ipv6.
â€“Â Jesse_b
Jun 21 at 20:05

add a commentÂ |Â

up vote
2
down vote

curl is for HTTP / HTTPS / FTP; not for SSH or Telnet.

I'd just use netcat:

testport=22 # 22 for ssh; 23 for telnet; 80 for HTTP; etc.
while read ip; do
 if nc -w2 -z $ip $testport; then
 echo $ip up
 else
 echo $ip down
 fi >> testresults.txt
done < hostlist.txt

edited Jun 21 at 19:26

Jesse_b

10.2k22658

answered Jun 21 at 18:49

DopeGhoti

39.7k54779

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

up vote
2
down vote

Using the bash builtin to check for open ports may work as well:

#!/bin/bash

host_file=/path/to/file.txt
out_file=/path/to/out.txt

while read -r ip; do
 if timeout 5 bash -c "cat < /dev/null >/dev/tcp/$ip/22"; then
 echo -e "$iptSuccess"
 else
 echo -e "$iptFailure" 
 fi >> "$out_file"
done < "$host_file"

answered Jun 21 at 19:13

Jesse_b

10.2k22658

I didn't know this one. Is it documented anywhere? Does it also work with IPv6?
â€“Â Tomasz
Jun 21 at 19:55

1

@Tomasz: It's documented in the bash reference manual 3.6 Redirections. I'm unsure if it works with ipv6.
â€“Â Jesse_b
Jun 21 at 20:05

add a commentÂ |Â

up vote
2
down vote

Using the bash builtin to check for open ports may work as well:

#!/bin/bash

host_file=/path/to/file.txt
out_file=/path/to/out.txt

while read -r ip; do
 if timeout 5 bash -c "cat < /dev/null >/dev/tcp/$ip/22"; then
 echo -e "$iptSuccess"
 else
 echo -e "$iptFailure" 
 fi >> "$out_file"
done < "$host_file"

answered Jun 21 at 19:13

Jesse_b

10.2k22658

I didn't know this one. Is it documented anywhere? Does it also work with IPv6?
â€“Â Tomasz
Jun 21 at 19:55

1

@Tomasz: It's documented in the bash reference manual 3.6 Redirections. I'm unsure if it works with ipv6.
â€“Â Jesse_b
Jun 21 at 20:05

add a commentÂ |Â

up vote
2
down vote

Using the bash builtin to check for open ports may work as well:

#!/bin/bash

host_file=/path/to/file.txt
out_file=/path/to/out.txt

while read -r ip; do
 if timeout 5 bash -c "cat < /dev/null >/dev/tcp/$ip/22"; then
 echo -e "$iptSuccess"
 else
 echo -e "$iptFailure" 
 fi >> "$out_file"
done < "$host_file"

answered Jun 21 at 19:13

Jesse_b

10.2k22658

Using the bash builtin to check for open ports may work as well:

#!/bin/bash

host_file=/path/to/file.txt
out_file=/path/to/out.txt

while read -r ip; do
 if timeout 5 bash -c "cat < /dev/null >/dev/tcp/$ip/22"; then
 echo -e "$iptSuccess"
 else
 echo -e "$iptFailure" 
 fi >> "$out_file"
done < "$host_file"

answered Jun 21 at 19:13

Jesse_b

10.2k22658

answered Jun 21 at 19:13

Jesse_b

10.2k22658

answered Jun 21 at 19:13

Jesse_b

10.2k22658

answered Jun 21 at 19:13

Jesse_b

10.2k22658

I didn't know this one. Is it documented anywhere? Does it also work with IPv6?
â€“Â Tomasz
Jun 21 at 19:55

1

@Tomasz: It's documented in the bash reference manual 3.6 Redirections. I'm unsure if it works with ipv6.
â€“Â Jesse_b
Jun 21 at 20:05

add a commentÂ |Â

I didn't know this one. Is it documented anywhere? Does it also work with IPv6?
â€“Â Tomasz
Jun 21 at 19:55

1

@Tomasz: It's documented in the bash reference manual 3.6 Redirections. I'm unsure if it works with ipv6.
â€“Â Jesse_b
Jun 21 at 20:05

I didn't know this one. Is it documented anywhere? Does it also work with IPv6?
â€“Â Tomasz
Jun 21 at 19:55

@Tomasz: It's documented in the bash reference manual 3.6 Redirections. I'm unsure if it works with ipv6.
â€“Â Jesse_b
Jun 21 at 20:05

add a commentÂ |Â

up vote
2
down vote

curl is for HTTP / HTTPS / FTP; not for SSH or Telnet.

I'd just use netcat:

testport=22 # 22 for ssh; 23 for telnet; 80 for HTTP; etc.
while read ip; do
 if nc -w2 -z $ip $testport; then
 echo $ip up
 else
 echo $ip down
 fi >> testresults.txt
done < hostlist.txt

edited Jun 21 at 19:26

Jesse_b

10.2k22658

answered Jun 21 at 18:49

DopeGhoti

39.7k54779

add a commentÂ |Â

up vote
2
down vote

curl is for HTTP / HTTPS / FTP; not for SSH or Telnet.

I'd just use netcat:

testport=22 # 22 for ssh; 23 for telnet; 80 for HTTP; etc.
while read ip; do
 if nc -w2 -z $ip $testport; then
 echo $ip up
 else
 echo $ip down
 fi >> testresults.txt
done < hostlist.txt

edited Jun 21 at 19:26

Jesse_b

10.2k22658

answered Jun 21 at 18:49

DopeGhoti

39.7k54779

add a commentÂ |Â

up vote
2
down vote

curl is for HTTP / HTTPS / FTP; not for SSH or Telnet.

I'd just use netcat:

testport=22 # 22 for ssh; 23 for telnet; 80 for HTTP; etc.
while read ip; do
 if nc -w2 -z $ip $testport; then
 echo $ip up
 else
 echo $ip down
 fi >> testresults.txt
done < hostlist.txt

edited Jun 21 at 19:26

Jesse_b

10.2k22658

answered Jun 21 at 18:49

DopeGhoti

39.7k54779

curl is for HTTP / HTTPS / FTP; not for SSH or Telnet.

I'd just use netcat:

testport=22 # 22 for ssh; 23 for telnet; 80 for HTTP; etc.
while read ip; do
 if nc -w2 -z $ip $testport; then
 echo $ip up
 else
 echo $ip down
 fi >> testresults.txt
done < hostlist.txt

edited Jun 21 at 19:26

Jesse_b

10.2k22658

answered Jun 21 at 18:49

DopeGhoti

39.7k54779

edited Jun 21 at 19:26

Jesse_b

10.2k22658

edited Jun 21 at 19:26

Jesse_b

10.2k22658

edited Jun 21 at 19:26

Jesse_b

10.2k22658

answered Jun 21 at 18:49

DopeGhoti

39.7k54779

answered Jun 21 at 18:49

DopeGhoti

39.7k54779

answered Jun 21 at 18:49

DopeGhoti

39.7k54779

add a commentÂ |Â

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