Running Unix shell script with batch file to download files from WinSCP

问题

I am trying to download a file from WinSCP through batch file. I am able to download the file if I enter the file name in the batch file.

But I need to enter the file name dynamically (i.e., file name has to be entered at run time).

Here is my code

cd\Users\Desktop\WinSCP
winscp.com /ini=null /script=C:\Users\Desktop\test.txt
open sftp://username:password@hostname/
$ ssh -o "StrictHostKeyChecking=yes" username@hostname
cd /log
get test.log C:\Users\Desktop\Downloading_logs\

here Test.log is the file name I am providing in the batch file.

Please suggest a way to enter the file name dynamically.

Thanks in advance.

回答1:

Use an argument for the batch file

Code (script_with_arg.bat):

@echo off

setlocal enableextensions

if "%~1" equ "" (
    echo "Please provide a file name"
    goto :eof
)

cd\Users\Desktop\WinSCP
winscp.com /ini=null /script=C:\Users\Desktop\test.txt
open sftp://username:password@hostname/
$ ssh -o "StrictHostKeyChecking=yes" username@hostname
cd /log
get "%~1" C:\Users\Desktop\Downloading_logs\

echo "Done"

Notes:

• It's the most straightforward way to do this
• The argument is referred to as "%~1". Check [SS64]: Command Line arguments (Parameters) for more details
• The if clause at the beginning is to verify if the argument was provided, if not simply display an error message and exit
• When dealing with paths, it's always better to dblquote them, as a SPACE in the path might completely mess things up

Other ways:

• Use an environment variable (instead of the argument) set from outside the script
• Let the user input the file name (via set /p) from the script, as pointed by @ramu246 's comment (I missed this one :) )

@EDIT0:

• After looking at @MartinPrikryl's comment, and doing some tests, it turns out that your .bat file is total crap (so is mine, since it's based on yours)
• However, the fix is still OK, even if it doesn't work (because I applied it blindly - check the previous bullet)

I did some changes, and below is a version that really works (of course the sensitive data has been altered).

script.bat:

@echo off

if "%~1" equ "" (
    echo "Please provide a file name"
    goto :eof
)

winscp.com /ini=winscp_cfg.ini /script=winscp_script.txt /parameter "%~1"
echo "Done"

winscp_script.txt:

echo Received argument: "%1%"
open sftp://cfati:password@127.0.0.1:22001/
cd /tmp
get "%1%" .\"%1%"
exit

Output:

e:\Work\Dev\StackOverflow\q047989047>where winscp
c:\Install\x86\WinSCP\WinSCP\AllVers\WinSCP.com
c:\Install\x86\WinSCP\WinSCP\AllVers\WinSCP.exe

e:\Work\Dev\StackOverflow\q047989047>dir /b
script.bat
winscp_script.txt

e:\Work\Dev\StackOverflow\q047989047>script.bat "test with spaces.log"
Received argument: "test with spaces.log"
Searching for host...
Connecting to host...
Authenticating...
Continue connecting to an unknown server and add its host key to a cache?

The server's host key was not found in the cache. You have no guarantee that the server is the computer you think it is.

The server's Ed25519 key details are:

    Algorithm:  ssh-ed25519 256
    SHA-256:    M/iFTnSbi0k4VEcd8I75GiO7t6gza6RL99Pkh+bz4AQ=
    MD5:        8f:2f:f0:4a:ed:41:aa:e6:61:fa:5d:1f:f4:5b:c0:37

If you trust this host, press Yes. To connect without adding host key to the cache, press No. To abandon the connection press Cancel.
In scripting, you should use a -hostkey switch to configure the expected host key.
(Y)es, (N)o, C(a)ncel (8 s), (C)opy Key, (P)aste key: Yes
Using username "cfati".
Authenticating with pre-entered password.
Authenticated.
Starting the session...
Session started.
Active session: [1] cfati@127.0.0.1
/tmp
test with spaces.log      |            6 B |    0.0 KB/s | binary | 100%
"Done"

e:\Work\Dev\StackOverflow\q047989047>dir /b
script.bat
test with spaces.log
winscp_cfg.ini
winscp_script.txt

e:\Work\Dev\StackOverflow\q047989047>del /q "test with spaces.log"

e:\Work\Dev\StackOverflow\q047989047>dir /b
script.bat
winscp_cfg.ini
winscp_script.txt

e:\Work\Dev\StackOverflow\q047989047>script.bat "test with spaces.log"
Received argument: "test with spaces.log"
Searching for host...
Connecting to host...
Authenticating...
Using username "cfati".
Authenticating with pre-entered password.
Authenticated.
Starting the session...
Session started.
Active session: [1] cfati@127.0.0.1
/tmp
test with spaces.log      |            6 B |    0.0 KB/s | binary | 100%
"Done"

e:\Work\Dev\StackOverflow\q047989047>dir /b
script.bat
test with spaces.log
winscp_cfg.ini
winscp_script.txt

Notes:

• This time I'm using my own paths
• The .ini file (winscp_cfg.ini) is required in order to pass the host's fingerprint. It's also possible to pass -hostkey argument for open command ([WinSCP]: open), but I wasn't successful (I didn't try too much either)
  • As you can see in the output, 1^st time it requires user confirmation ((Y)es, (N)o, C(a)ncel....), in order to generate the file, and next times it simply uses it
  • Same thing happened for you (I assume that you wanted to skip the .ini file name), but due to a mistake: Ux's /dev/null equivalent in Win is nul (single l), so winscp_cfg.ini for your case was a file called null

来源：https://stackoverflow.com/questions/47989047/running-unix-shell-script-with-batch-file-to-download-files-from-winscp