(Ruby) SSH Commands to Cisco Switch

Demonstrates how to establish an SSH session with a Cisco switch (or something similar) and send commands in a device console session.

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

ssh = Chilkat::CkSsh.new()

success = ssh.Connect("172.16.16.100",22)
if (success != true)
    print ssh.lastErrorText() + "\n";
    exit
end

# Authenticate using login/password:
success = ssh.AuthenticatePw("myLogin","myPassword")
if (success != true)
    print ssh.lastErrorText() + "\n";
    exit
end

# Start a shell session.
channelNum = ssh.QuickShell()
if (channelNum < 0)
    print ssh.lastErrorText() + "\n";
    exit
end

# If the CISCO switch returns a prompt with "#", then read until we get the prompt.
# (It's not actually required that we do this, but it helps to know that all is OK at this point..)
success = ssh.ChannelReceiveUntilMatch(channelNum,"#","utf-8",true)
if (success != true)
    print ssh.lastErrorText() + "\n";
    exit
end

# Show what we received so far:
print ssh.getReceivedText(channelNum,"utf-8") + "\n";

# Send a "show clock" command.
success = ssh.ChannelSendString(channelNum,"show clock\n","utf-8")

# Read the output to the next interactive prompt.
success = ssh.ChannelReceiveUntilMatch(channelNum,"#","utf-8",true)
if (success != true)
    print ssh.lastErrorText() + "\n";
    exit
end

print ssh.getReceivedText(channelNum,"utf-8") + "\n";

# Send another command and get the output, and so on...
success = ssh.ChannelSendString(channelNum,"some other command\n","utf-8")
success = ssh.ChannelReceiveUntilMatch(channelNum,"#","utf-8",true)
if (success != true)
    print ssh.lastErrorText() + "\n";
    exit
end

print ssh.getReceivedText(channelNum,"utf-8") + "\n";

ssh.Disconnect()