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Text 17697, 103 rader
Skriven 2015-06-13 12:00:20 av Wilfred van Velzen (2:280/464)
     Kommentar till en text av Khelair (563.fidolinux)
Ärende: Re: Shell script issue; rsync error wtf
===============================================
Hi,

On 2015-06-13 00:06:06, Khelair wrote to All:
  about: "Shell script issue; rsync error wtf":

 Kh>   I'm working with the following shell script for automating a task
 Kh> that I
 Kh> need to accomplish for one of my clients...  Unfortunately the version
that
 Kh> I've written is having some really weird bugs creeping up when it's
 Kh> executed as a shell script.  It's proving pretty problematic to debug, as
 Kh> when I throw the script into debugging mode and cut 'n paste the actual
 Kh> command that it's trying to execute into the shell, it works just fine.
 Kh> When it's trying to execute via the script I get the following error:

 Kh> -=-=-=-=-
 Kh> ./sync_static_to_dev.sh
 Kh> Rsyncing /server/assets with options: -vHrltD -e \'ssh -p 22\'
 Kh> dgetsman@10.183.1.251:/server/assets /server/assets
 Kh> Unexpected remote arg: dgetsman@10.183.1.251:/server/assets
 Kh> rsync error: syntax or usage error (code 1) at main.c(1201) [sender=3.0.6]
 Kh> Done
 Kh> -=-=-=-=-

 Kh>   I thought at first that perhaps there was an issue with the way that I
 Kh> had used the quoting within the shell.  I've had other weird, esoteric
 Kh> kinds of errors due to quoting incorrectly via shell script previously. 
So
 Kh> I went back through the script that follows and ended up escaping all
 Kh> occurrances of the single-tick (') quoting, but still ended up getting the
 Kh> same error. So anyway, if there are any shell script wizards in the house,
 Kh> any you've got any ideas on why this is failing as a script, but working
 Kh> when I cut 'n paste the debugging output of the command straight into the
 Kh> shell, I'd greatly appreciate any feedback you might be able to
 Kh> offer. Script follows:

 Kh> -=-=-=-=-
 Kh> #!/bin/sh

 Kh> # script's functionality is to rsync static assets from whatever directory
 Kh> # (specified in constants) from production to whatever directory specified
 Kh> on # command line with an optional default (later, meh, nunathismattahs)

 Kh> WHICH='/usr/bin/which'

 Kh> STATIC_ASSETS='/server/assets'
 Kh> SOURCE='10.183.1.251'       #use the quick link; this'll break quick

 Kh> DEBUGGING=0
 Kh> VERBOSE=1

 Kh> WHOAMI=`$WHICH whoami`
 Kh> RSYNC=`$WHICH rsync`

 Kh> if [ -n "$1" ] ; then
 Kh>     USER=$1
 Kh> else
 Kh>     USER=`$WHOAMI`
 Kh> fi

 Kh> if [ $VERBOSE -gt 0 ] ; then
 Kh>   RSYNC_OPTS="-vHrltD -e 'ssh -p 22' $USER@$SOURCE:$STATIC_ASSETS \
 Kh>     $STATIC_ASSETS"
 Kh> else
 Kh>   RSYNC_OPTS="-HrltD -e 'ssh -p 22' $USER@$SOURCE:$STATIC_ASSETS \
 Kh>     $STATIC_ASSETS"
 Kh> fi

 Kh> if [ $DEBUGGING -eq 0 ] ; then
 Kh>     if [ $VERBOSE -gt 0 ] ; then
 Kh>         #RSYNC_OPTS="-vHrltD -e 'ssh -p 22' $USER@$SOURCE:$STATIC_ASSETS \
 Kh>         #    $STATIC_ASSETS"

 Kh>         echo Rsyncing $STATIC_ASSETS with options: $RSYNC_OPTS
 Kh>         $RSYNC $RSYNC_OPTS
 Kh>         echo Done
 Kh>     else
 Kh>         #RSYNC_OPTS="-HrltD -e 'ssh -p 22' $USER@$SOURCE:$STATIC_ASSETS \
 Kh>         #    $STATIC_ASSETS"

 Kh>         $RSYNC $RSYNC_OPTS
 Kh>     fi
 Kh> else
 Kh>     echo $RSYNC $RSYNC_OPTS
 Kh> fi

 Kh> -=-=-=-=-

 Kh>   Anything you might be able to offer is greatly appreciated!  TIA

What shell is /bin/sh on your system? Have you tried explicitly setting
#!/bin/bash for instance?

As port 22 is the default ssh port, you don't have to specify it. You can just
do -e ssh without the hassel of the quotes, for testing.

I do however always use -e 'ssh -o BatchMode=yes' ... YMMV ...

Bye, Wilfred.


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