sftp> ls
sftp> put /tmp/testx
Uploading /tmp/testx to /folder1/target_folder
/tmp/testx                                 100%    5     0.0KB/s   00:01
sftp> get testx
Couldn't stat remote file: No such file or directory
File "/folder1/target_folder/testx" not found.
sftp> ls
sftp>

debug3: SSH_FXP_REALPATH . -> /folder1
debug3: Looking up /tmp/file_to_send
debug3: Sent message sender_host 4 T:17 I:2
debug3: Wrote 80 bytes for a total of 2653
debug3: Received stat reply T:105 I:2
debug3: Sent message SSH2_FXP_OPEN I:3 P:/folder1/target_directory/file_to_send
debug3: Wrote 112 bytes for a total of 2765
debug3: Sent message SSH2_FXP_WRITE I:4 O:0 S:6206
debug3: Wrote 6288 bytes for a total of 9053
debug3: SSH2_FXP_STATUS 0

drw-rw-rw-    1  0   0       target_directory

SSHPASS=${PASSWORD} sshpass -e sftp -vvv -oStrictHostKeyChecking=no -oBatchMode=no -b - ${LOGON}@${FTPSITE} >${LOB}ftp.log 2>&1 <<EOF
pwd
cd upload
put ${XMTFILE}
quit
EOF
# sftp does not use FTP codes - it only gives the final status of the requested operation
Status=$?
# Not perfect, but sending a single file using -vvv should produce 2 lines containing "debug3: SSH2_FXP_STATUS 0"
Tmp=`grep "debug3: SSH2_FXP_STATUS 0" ${LOB}ftp.log | wc -l`
[ ${Tmp} -ne 2 ] && Status=1 # Override sftp exit value based on log info