Lianja

SSH Quick/Simple Shell Session

See more SSH Examples

Demonstrates the simplified way to run multiple commands in a shell session on an SSH server. Lianja

llSuccess = .F.

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

loSsh = createobject("CkSsh")

lnPort = 22
llSuccess = loSsh.Connect("the-ssh-server.com",lnPort)
if (llSuccess = .F.) then
    ? loSsh.LastErrorText
    release loSsh
    return
endif

// Authenticate using login/password:
llSuccess = loSsh.AuthenticatePw("theSshLogin","theSshPassword")
if (llSuccess = .F.) then
    ? loSsh.LastErrorText
    release loSsh
    return
endif

// Start a shell session.
lnChannelNum = loSsh.QuickShell()
if (lnChannelNum < 0) then
    ? loSsh.LastErrorText
    release loSsh
    return
endif

// Construct a StringBuilder with multiple commands, one per line.
// Note: The line-endings are potentially important.  Some SSH servers may
// require either LF or CRLF line endings.  (Unix/Linux/OSX servers typically
// use bare-LF line endings.  Windows servers likely use CRLF line endings.)
loSbCommands = createobject("CkStringBuilder")
loSbCommands.Append("echo hello world" + Chr(10))
loSbCommands.Append("date" + Chr(10))
loSbCommands.Append("df" + Chr(10))

// For our last command, we're going to echo a marker string that
// we'll use in ChannelReceiveUntilMatch below.
// The use of single quotes around 'IS' is a trick so that the output
// of the command is "THIS IS THE END OF THE SCRIPT", but the terminal echo
// includes the single quotes.  This allows us to read until we see the actual
// output of the last command.
loSbCommands.Append("echo THIS 'IS' THE END OF THE SCRIPT" + Chr(10))

// Send the commands..
llSuccess = loSsh.ChannelSendString(lnChannelNum,loSbCommands.GetAsString(),"ansi")
if (llSuccess = .F.) then
    ? loSsh.LastErrorText
    release loSsh
    release loSbCommands
    return
endif

// Receive output up to our marker.
llSuccess = loSsh.ChannelReceiveUntilMatch(lnChannelNum,"THIS IS THE END OF THE SCRIPT","ansi",.T.)

// Send an EOF to indicate no more commands will be sent.
// For brevity, we're not checking the return values of each method call.
// Your code should check the success/failure of each call.
llSuccess = loSsh.ChannelSendEof(lnChannelNum)

// Close the channel.
// It is important to close the channel only after receiving the desired output.
llSuccess = loSsh.ChannelSendClose(lnChannelNum)

// Get any remaining output..
llSuccess = loSsh.ChannelReceiveToClose(lnChannelNum)

// Get the complete output for all the commands in the session.
? "--- output ----"
? loSsh.GetReceivedText(lnChannelNum,"ansi")

// Here's our actual sample output:

// 	Last login: Thu Dec 22 20:19:09 2016 from chilkat13
// 
// 	echo hello world
// 	date
// 	df
// 	echo THIS 'IS' THE END OF THE SCRIPT
// 	chilkatosx:~ chilkat$ echo hello world
// 	hello world
// 	chilkatosx:~ chilkat$ date
// 	Thu Dec 22 20:30:48 CST 2016
// 	chilkatosx:~ chilkat$ df
// 	Filesystem    512-blocks      Used  Available Capacity  iused     ifree %iused  Mounted on
// 	/dev/disk2    2176716032 265768928 1910435104    13% 33285114 238804388   12%   /
// 	devfs                383       383          0   100%      664         0  100%   /dev
// 	map -hosts             0         0          0   100%        0         0  100%   /net
// 	map auto_home          0         0          0   100%        0         0  100%   /home
// 	/dev/disk3s2      374668    374668          0   100%    93665         0  100%   /Volumes/Google Chrome
// 	chilkatosx:~ chilkat$ echo THIS 'IS' THE END OF THE SCRIPT
// 	THIS IS THE END OF THE SCRIPT
// 	chilkatosx:~ chilkat$ 


release loSsh
release loSbCommands