bash – 在脚本化命令行SFTP会话中检测上载成功/失败？

我的完整脚本如下.基本问题是,应该判断文件是否成功上传的部分不起作用.无论上载是否成功,SFTP命令的退出状态始终为“0”.

如何判断文件是否正确上传,以便我知道是删除文件还是让它删除？

#!/bin/bash

# First,save the folder path containing the files.
FILES=/home/bob/theses/*

# Initialize a blank variable to hold messages.
MESSAGES=""
ERRORS=""


# These are for notifications of file totals.
COUNT=0
ERRORCOUNT=0

# Loop through the files.
for f in $FILES
do
    # Get the base filename
    BASE=`basename $f`

    # Build the SFTP command. Note space in folder name.
    CMD='cd "Destination Folder"n'
    CMD="${CMD}put ${f}nquitn"


    # Execute it.
    echo -e $CMD | sftp -oIdentityFile /home/bob/.ssh/id_rsa bob@ftp.example.edu

    # On success,make a note,then delete the local copy of the file.
    if [ $? == "0" ]; then
        MESSAGES="${MESSAGES}tNew file: ${BASE}n"
        (( COUNT=$COUNT+1 ))

        # Next line commented out for ease of testing
        #rm $f
    fi

    # On failure,add an error message.
    if [ $? != "0" ]; then
        ERRORS="${ERRORS}tFailed to upload file ${BASE}n"
        (( ERRORCOUNT=$ERRORCOUNT+1 ))
    fi

done

SUBJECT="New Theses"

BODY="There were ${COUNT} files and ${ERRORCOUNT} errors in the latest batch.nn"

if [ "$MESSAGES" != "" ]; then
    BODY="${BODY}New files:nn${MESSAGES}nn"
fi

if [ "$ERRORS" != "" ]; then
    BODY="${BODY}Problem files:nn${ERRORS}"
fi

# Send a notification. 
echo -e $BODY | mail -s $SUBJECT bob@example.edu

由于一些让我头疼的操作方面的考虑因素,我无法使用SCP.远程服务器在Windows上使用WinSSHD,并且没有EXEC权限,因此任何SCP命令都会失败并显示消息“通道0上的执行请求失败”.因此,必须通过交互式SFTP命令进行上载.