For some project  we have to access remote server. Even, we have to upload file to the directory  in the server.  If you want to copy file using pscp, here the general template :

PuTTY Secure Copy client
Release 0.53
Usage: pscp [options] [user@]host:source target
       pscp [options] source [source...] [user@]host:target
       pscp [options] -ls user@host:filespec
  -p        preserve file attributes
  -q        quiet, don't show statistics
  -r        copy directories recursively
  -v        show verbose messages
  -load sessname  Load settings from saved session
  -P port   connect to specified port
  -l user   connect with specified username
  -pw passw login with specified password
  -1 -2     force use of particular SSH protocol version
  -C        enable compression
  -i key    private key file for authentication
  -batch    disable all interactive prompts
  -unsafe   allow server-side wildcards (DANGEROUS)

(PSCP’s interface is much like the Unix scp command, if you’re familiar with that.)

For example :

toto@toto-laptop#pscp -i private_key.ppk source.ext