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Full Discussion: Test exit status of last cmd via ssh
Top Forums Shell Programming and Scripting Test exit status of last cmd via ssh Post 302754853 by jack.bauer on Friday 11th of January 2013 10:16:37 AM
Old 01-11-2013
Quote:
Originally Posted by jim mcnamara
I don't get why you need ssh -n (-n option). But it won't affect what we are doing.
One easy way to get a status is to echo one. We use OK NOTOK

Code:
st=$(ssh  me@myhost  'some command >/dev/null 2>&1 &&  echo OK || echo NOTOK' )
[ "$st" = "OK" ] || echo "failed on $myhost" | mailx -s "$myhost error" me@home

cool that works. although first i thought you made an error with "st" = "OK" so i tried NOTOK first. i.e if the result of the previous cmd was not ok then report failure. but that didnt work, your line worked. why is that? how am i reading that?

this is how ive implemented it

Code:
  st=$(ssh $myuserid@$myhost 'mv $mypath/OrderDump* $mypath/archive > /dev/null 2>&1 && echo OK || echo NOTOK')
        [ "$st" = "OK" ] || echo "failed on $myhost"

---------- Post updated at 09:51 AM ---------- Previous update was at 09:43 AM ----------

wait a sec, doesnt quite work well. it still echos the failure text even if the cmd is sucessfull

so in the below both myssh1 and myssh2 were OK (meaning to say they did what they were meant to i.e ls to show the files and mv to archive them)

Code:
   myssh1=$(ssh $myuserid@$myhost 'ls $mypath/OrderDump*  > /dev/null 2>&1 && echo OK || echo NOTOK')
        [ "$myssh1" = "OK" ] || echo "No Order Dump files found on $myhost"

        myssh2=$(ssh $myuserid@$myhost 'mv $mypath/OrderDump* $mypath/archive > /dev/null 2>&1 && echo OK || echo NOTOK')
        [ "$myssh2" = "OK" ] || echo "Nothing to clean up on $myhost"

yet the result was

1. files were archived off
2. output text below

No Order Dump files found on <host>
Nothing to clean up on <host>

---------- Post updated at 10:16 AM ---------- Previous update was at 09:51 AM ----------

and does the || apply if the ls returns

ls: /OrderDump*: No such file or directory
 

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LEARN ABOUT MINIX

sftp-server

sftp-server(1M) 					  System Administration Commands					   sftp-server(1M)

NAME

       sftp-server - SFTP server subsystem

SYNOPSIS

       /usr/lib/ssh/sftp-server

DESCRIPTION

       sftp-server implements the server side of the SSH File Transfer Protocol as defined in the IETF draft-ietf-secsh-filexfer.

       sftp-server is a subsystem for sshd(1M) and must not be run directly. There are no options or config settings.

       To enable the sftp-server subsystem for sshd add the following to /etc/ssh/sshd_config:

       Subsystem   sftp     /usr/lib/ssh/sftp-server

       See sshd_config(4) for a description of the format and contents of that file.

       There is no relationship between the protocol used by sftp-server and the FTP protocol (RFC 959) provided by in.ftpd.

EXIT STATUS

       The following exit values are returned:

       0	Successful completion.

       >0	An error occurred.

FILES

       /usr/lib/sftp-server

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWsshdu 		   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       sftp(1), ssh(1), ssh-add(1), ssh-keygen(1), sshd(1M), sshd_config(4), attributes(5)

       To  view  license  terms,  attribution,	and  copyright	for OpenSSH, the default path is /var/sadm/pkg/SUNWsshdr/install/copyright. If the
       Solaris operating environment has been installed anywhere other than the default, modify the given path to access the file at the installed
       location.

AUTHOR

       Markus Friedl

SunOS 5.10							    30 Jul 2003 						   sftp-server(1M)
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