add -J proxyjump option (#15)

doc/mscp.1.in

@@ -56,6 +56,9 @@ mscp \- copy files over multiple SSH connections
 .BI \-i \ IDENTITY\c
 ]
 [\c
+.BI \-J \ DESTINATION\c
+]
+[\c
 .BI \-c \ CIPHER\c
 ]
 [\c
@@ -270,6 +273,19 @@ supports.
 .B \-i \fIIDENTITY\fR
 Specifies the identity file for public key authentication.
 
+.TP
+.B \-J \fIDESTINATION\fR
+A shortcut to define a
+.B ProxyJump
+configuration directive. Each SFTP session of
+.B mscp
+connects to the target host by first making an
+.B ssh
+connection to the jump host described by
+.I destination.
+
+
+
 .TP
 .B \-c \fICIPHER\fR
 Selects the cipher to use for encrypting the data transfer. See

doc/mscp.rst

@@ -2,7 +2,7 @@
 MSCP
 ====
 
-:Date: v0.1.5-16-ga1ba6f1
+:Date: v0.1.5-18-ge47d5b7
 
 NAME
 ====
@@ -18,8 +18,8 @@ SYNOPSIS
 **-S** *MAX_CHUNK_SIZE* ] [ **-a** *NR_AHEAD* ] [ **-b** *BUF_SIZE* ] [
 **-L** *LIMIT_BITRATE* ] [ **-l** *LOGIN_NAME* ] [ **-P** *PORT* ] [
 **-F** *SSH_CONFIG* ] [ **-o** *SSH_OPTION* ] [ **-i** *IDENTITY* ] [
-**-c** *CIPHER* ] [ **-M** *HMAC* ] [ **-C** *COMPRESS* ] [ **-g**
-*CONGESTION* ] *source ... target*
+**-J** *DESTINATION* ] [ **-c** *CIPHER* ] [ **-M** *HMAC* ] [ **-C**
+*COMPRESS* ] [ **-g** *CONGESTION* ] *source ... target*
 
 DESCRIPTION
 ===========
@@ -159,6 +159,11 @@ OPTIONS
 **-i IDENTITY**
    Specifies the identity file for public key authentication.
 
+**-J DESTINATION**
+   A shortcut to define a **ProxyJump** configuration directive. Each
+   SFTP session of **mscp** connects to the target host by first making
+   an **ssh** connection to the jump host described by *destination.*
+
 **-c CIPHER**
    Selects the cipher to use for encrypting the data transfer. See
    `libssh features <https://www.libssh.org/features/>`__.