我在linux上创建了一个bash脚本，我可以通过ssh远程调用它。出于某种原因，只有当我直接在框上运行命令时，shell脚本才会生成预期的输出。但是，如果我使用完全相同的输入（来自远程框通过ssh ）运行完全相同的命令，则不会收到任何输出。
有趣的是，我创建了一个“用法”字符串，当你传入没有参数时打印出来，如果我通过没有参数的ssh调用脚本，我会看到用法字符串。这告诉我ssh客户端可以从远程shell脚本接收输出。
我尝试从同一子网上的另一个linux框调用该命令。我试过从Windows调用命令（cygwin / open ssh）。在这两种情况下，行为都是一样的。
我完全难过了。如何获取通过ssh调用的shell脚本的输出。
如果您想知道shell脚本中的内容，它只生成过去20分钟内修改过的文件列表，然后调用python程序来处理这些文件：
if [ $# -lt 1 ]
then
echo "Usage: $0 <cluster>"
echo "-----------------------"
echo "Example: $0 mycluster"
exit
fi
clusterName=$1
find /mylogs/abc/123/mydir -mmin -20 -name "mylog*.log" > /home/myuser/file_names.txt
python filterDatesInFiles.py | sed -e "s/^/${HOSTNAME},\/mylogs\/abc\/123\/mydir\/^*~%$/"
如果你对python脚本感兴趣，那么它是：
#!/usr/bin/env python
import datetime, sys, time
# Example log line:
# [2/20/18 10:03:27:187 GMT-07:00] 0000001c SystemOut O ....
f = open("/home/myuser/file_names.txt")
lines = f.readlines()
f.close()
for line in lines:
line = line.strip()
if len(line) == 0:
continue
f = open(line)
fileLines = f.readlines()
f.close()
for fileLine in fileLines:
fileLineStripped = fileLine.strip()
if len(fileLine) == 0:
continue
if not fileLine.startswith("["):
continue
fields = fileLine.split(" ")
dateTime = fields[0].split("[")[1] + " " + fields[1]
dtObj = datetime.datetime.strptime(dateTime, "%m/%d/%y %H:%M:%S:%f")
currentTime = datetime.datetime.now()
d1_ts = time.mktime(dtObj.timetuple())
d2_ts = time.mktime(currentTime.timetuple())
minutesAgo = int(d2_ts-d1_ts) / 60
if minutesAgo <= 15:
print fileLineStripped
但是，我知道这个脚本有效，因为正如我所说，我可以直接在目标框上运行这个脚本，它会产生正确的输出。
以下是我通过ssh调用它的方法：
ssh myuser@mylinuxserver '/home/myuser/logScraper.sh mycluster'
注意 - 当我用“-v”运行ssh命令时，这是我得到的输出：
$ ssh -v myuser@myhost.mydomain.com '/home/myuser/logScraper.sh mycluster'
OpenSSH_6.1p1, OpenSSL 1.0.1c 10 May 2012
debug1: Connecting to myhost.mydomain.com [123.45.67.61] port 22.
debug1: Connection established.
debug1: identity file /home/myremoteuser/.ssh/id_rsa type 1
debug1: identity file /home/myremoteuser/.ssh/id_rsa-cert type -1
debug1: identity file /home/myremoteuser/.ssh/id_dsa type -1
debug1: identity file /home/myremoteuser/.ssh/id_dsa-cert type -1
debug1: identity file /home/myremoteuser/.ssh/id_ecdsa type -1
debug1: identity file /home/myremoteuser/.ssh/id_ecdsa-cert type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.4
debug1: match: OpenSSH_7.4 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.1
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-sha1 none
debug1: kex: client->server aes128-ctr hmac-sha1 none
debug1: sending SSH2_MSG_KEX_ECDH_INIT
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ECDSA 93:a2:73:80:08:d5:cc:ad:78:c0:df:48:68:cb:b0:f4
debug1: Host 'myhost.mydomain.com' is known and matches the ECDSA host key.
debug1: Found key in /home/myremoteuser/.ssh/known_hosts:40
debug1: ssh_ecdsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: Roaming not allowed by server
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /home/myremoteuser/.ssh/id_rsa
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
debug1: Trying private key: /home/myremoteuser/.ssh/id_dsa
debug1: Trying private key: /home/myremoteuser/.ssh/id_ecdsa
debug1: Next authentication method: password
myuser@myhost.mydomain.com's password:
debug1: Authentication succeeded (password).
Authenticated to myhost.mydomain.com ([123.45.67.61]:22).
debug1: channel 0: new [client-session]
debug1: Requesting no-more-sessions@openssh.com
debug1: Entering interactive session.
debug1: client_input_global_request: rtype hostkeys-00@openssh.com want_reply 0
debug1: Sending command: /home/myuser/logScraper.sh mycluster
debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
debug1: client_input_channel_req: channel 0 rtype eow@openssh.com reply 0
debug1: channel 0: free: client-session, nchannels 1
Transferred: sent 2080, received 2392 bytes, in 0.5 seconds
Bytes per second: sent 4000.0, received 4600.0
debug1: Exit status 0
为什么我在通过ssh运行时无法获得输出的线索？