Question

我需要从命令行程序中检索退出状态代码。不用担心，我用过$？但对于ftp，即使它没有连接，也会打开ftp shell，所以我无法理解连接没有发生。

尝试使用此代码了解：

#!/bin/sh

ftp 1234567
OUT=$?
if [ $OUT -eq 0 ];then
   echo "ftp OK"
else
   echo "ftp Error: "$OUT
fi

exit 0

有任何帮助吗？谢谢Filippo

Answer 1

您应该从ftp命令中寻找成功消息，而不是寻找状态。这是“226转移完成”。您可以使用系统上的ftp手册进行确认。

200 PORT command successful.
150 Opening ASCII mode data connection for filename.
226 Transfer complete.
189 bytes sent in 0.145 seconds (0.8078 Kbytes/s)

这是一个示例脚本。

FTPLOG=/temp/ftplogfile
ftp -inv <<! > $FTPLOG
open server
user ftp pwd
put filename
close
quit
!

FTP_SUCCESS_MSG="226 Transfer complete"
if fgrep "$FTP_SUCCESS_MSG" $FTPLOG ;then
   echo "ftp OK"
else
   echo "ftp Error: "$OUT
fi
exit 0

Answer 2

如果您需要下载某些内容并查看下载是否成功，为什么不使用wget？它支持FTP协议。

它将使用多个返回代码报告下载状态（手册页引用）：

EXIT STATUS
   Wget may return one of several error codes if it encounters problems.
   0   No problems occurred.
   1   Generic error code.
   2   Parse error---for instance, when parsing command-line options, the .wgetrc or .netrc...
   3   File I/O error.
   4   Network failure.
   5   SSL verification failure.
   6   Username/password authentication failure.
   7   Protocol errors.
   8   Server issued an error response.

Answer 3

尝试以下脚本。

要复制：

#!/bin/bash
# cftp.sh
# set -x

FTPSERVER="$1"
FTPPORT="$2"
REMOTEDIR="$3"

[[ "$REMOTEDIR" ]] || { echo -e "Usage: $0 <ftpserver> <ftpport> <remotedir> [file1] [file2] ..." > /dev/stderr ; exit 1 ; }

L=$((BASH_ARGC-3))

LOCALFILES=("${BASH_ARGV[@]:0:$L}")

RETCODE=0

for LOCALFILE in "${LOCALFILES[@]}"
do
  THISRETCODE=0
  [[ -f "$LOCALFILE" ]] || THISRETCODE=1

  LOCALDIR="$(dirname "$LOCALFILE")"
  LOCALFILENAME="$(basename "$LOCALFILE")"

  [[ $THISRETCODE = 0 ]] &&
  /usr/bin/ftp -iv "$FTPSERVER" << EOF | grep -q '226 Transfer complete' || THISRETCODE=1
    lcd $LOCALDIR
    cd $REMOTEDIR
    put $LOCALFILENAME
EOF

  RETCODE=$((RETCODE+THISRETCODE))
done

exit $RETCODE

移动：

#!/bin/bash
# mftp.sh
# set -x

FTPSERVER="$1"
FTPPORT="$2"
REMOTEDIR="$3"

[[ "$REMOTEDIR" ]] || { echo -e "Usage: $0 <ftpserver> <ftpport> <remotedir> [file1] [file2] ..." > /dev/stderr ; exit 1 ; }

L=$((BASH_ARGC-3))

LOCALFILES=("${BASH_ARGV[@]:0:$L}")

RETCODE=0

for LOCALFILE in "${LOCALFILES[@]}"
do
  THISRETCODE=0
  [[ -f "$LOCALFILE" ]] || THISRETCODE=1

  LOCALDIR="$(dirname "$LOCALFILE")"
  LOCALFILENAME="$(basename "$LOCALFILE")"

  [[ $THISRETCODE = 0 ]] &&
  /usr/bin/ftp -iv "$FTPSERVER" << EOF | grep -q '226 Transfer complete' || THISRETCODE=1
    lcd $LOCALDIR
    cd $REMOTEDIR
    put $LOCALFILENAME
EOF

  [[ $THISRETCODE = 0 ]] &&
  /bin/rm -f "$LOCALFILE" || THISRETCODE=1

  RETCODE=$((RETCODE+THISRETCODE))
done

exit $RETCODE

以下是一些测试用例：

复制。

$ ./cftp.sh ; echo return code: $?
Usage: ./cftp.sh <ftpserver> <ftpport> <remotedir> [file1] [file2] ...
return code: 1
$ ./cftp.sh ftpserver 21 /mnt/disk4/d0/test ; echo return code: $?
return code: 0
$ ./cftp.sh ftpserver 21 /mnt/disk4/d0/test cftp.sh mftp.sh ; echo return code: $?
return code: 0
$ ./cftp.sh ftpserver 21 /mnt/disk4/d0/test *ftp.sh ; echo return code: $?
return code: 0
$ ./cftp.sh ftpserver 21 /mnt/disk4/d0/test cftp.s ; echo return code: $?
return code: 1
$ ./cftp.sh ftpserver 21 /mnt/disk4/d0/test cftp.s mftp.s ; echo return code: $?
return code: 2
$ ./cftp.sh ftpserver 21 /mnt/disk4/d0/tes cftp.sh ; echo return code: $?
return code: 1

移动。

$ ./mftp.sh ftpserver 21 /mnt/disk4/d0/test cftp.sh ; echo return code: $?
/bin/rm: cannot remove `cftp.sh': Permission denied
return code: 1
$ echo foo > /tmp/bar
$ ./mftp.sh ftpserver 21 /mnt/disk4/d0/test /tmp/bar ; echo return code: $?
return code: 0
$ ls -lha /tmp/bar
ls: cannot access /tmp/bar: No such file or directory

更新：记得阅读man 5 netrc

Answer 4

一些脚本 -

ftp -n $HOST > /tmp/ftp.worked 2> /tmp/ftp.failed <<END_SCRIPT
blah blah
END_SCRIPT

EXITSTATUS=$?

if [ $EXITSTATUS != "0" ]
then
    # handle the error...
fi

除了以上并不总是有效之外 - 大多数FTP客户端总是以状态0退出。这会导致丑陋的“漏报”：文件传输失败，但脚本没有检测到问题

验证文件传输的一种方法 - 将其传回：

#!/bin/sh ftp -n << END_SCRIPT open $1 user $2 $3 put $4 get $4 retrieval.$$ bye END_SCRIPT if [ -f retrieval.$$ ] then echo "FTP of $4 to $1 worked" rm -f retrieval.$$ else echo "FTP of $4 did not work" fi

Answer 5

上次我需要在脚本中使用ftp时，我对此感到非常沮丧，以至于我终于找到了一个获得BSD许可的ftp客户端源代码并简单地对其进行了修改，以便为其提供我需要的行为，并使用它而不是随操作系统提供的版本。

丑陋，但立方体墙上的头顶凹痕的深度开始变得荒谬

Answer 6

另一种方法是检查您的服务器上是否有文件传输后！

像...一样的东西。

if ![ -s "$INPUT_DIR/HOP_PSA_Transactions_$BATCH_ID.csv" ]
then
    ## No Transactions file
    FAIL_TIME=`date +"%d-%m-%Y %H:%M"`
	echo "ERROR: File HOP_PSA_Transactions_$BATCH_ID.csv not found @ $FAIL_TIME" >>$LOGFILE_DIR$LOGFILE_NAME
	exit $ERR_NO_TRANS_FILE    
fi

如果不存在那么它就没有成功转移！

从linux shell中的'ftp'命令获取退出状态代码

6 个答案: