PowerBuilder

Create a Symbolic Link on an SFTP Server

Demonstrates the Chilkat SFtp.SymLink method, which creates a symbolic link on the server. The first argument is the link target and the second is the new symbolic-link path.

Background: A symbolic link stores a path that points at another location, so it can span directories or filesystems and can even point at something that does not exist. A common use is a stable name like latest.log that is repointed at each day's file. Argument order is a frequent source of confusion — the target comes first, the new link path second — and note that how the target string is interpreted (relative to what) is up to the server's implementation.

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integer li_rc
integer li_Success
oleobject loo_Sftp
integer li_Port
string ls_Password

li_Success = 0

//  Demonstrates the SFtp.SymLink method, which creates a symbolic link on the server.  The 1st
//  argument is the link target and the 2nd is the new symbolic-link path.

loo_Sftp = create oleobject
li_rc = loo_Sftp.ConnectToNewObject("Chilkat.SFtp")
if li_rc < 0 then
    destroy loo_Sftp
    MessageBox("Error","Connecting to COM object failed")
    return
end if

//  Connect, authenticate, and initialize the SFTP subsystem.
li_Port = 22
li_Success = loo_Sftp.Connect("sftp.example.com",li_Port)
if li_Success = 0 then
    Write-Debug loo_Sftp.LastErrorText
    destroy loo_Sftp
    return
end if

//  Normally you would not hard-code the password in source.  You should instead obtain it
//  from an interactive prompt, environment variable, or a secrets vault.
ls_Password = "mySshPassword"

li_Success = loo_Sftp.AuthenticatePw("mySshLogin",ls_Password)
if li_Success = 0 then
    Write-Debug loo_Sftp.LastErrorText
    destroy loo_Sftp
    return
end if

li_Success = loo_Sftp.InitializeSftp()
if li_Success = 0 then
    Write-Debug loo_Sftp.LastErrorText
    destroy loo_Sftp
    return
end if

//  Create a symbolic link "subdir/latest.log" that points at "subdir/2026-07-23.log".  The
//  server's SFTP implementation determines how the target path is interpreted.
li_Success = loo_Sftp.SymLink("subdir/2026-07-23.log","subdir/latest.log")
if li_Success = 0 then
    Write-Debug loo_Sftp.LastErrorText
    destroy loo_Sftp
    return
end if

Write-Debug "Symbolic link created."

loo_Sftp.Disconnect()


destroy loo_Sftp