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POrsync run from bash script not preserving ownership
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  1. POrsync run from bash script not preserving ownership
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    copied!<p>I'm trying to create a bash script which will sync a directory specified as a command line parameter to a remote server (also specified by a parameter). At the moment, I'm using <code>eval</code>, which solves a parameter expansion problem, but for some reason causes rsync not to preserve ownership on the remote files (apart from being Evil, I know). Running the rsync command with all the same flags and parameters from the command prompt works fine.</p> <p>I tried using <code>$()</code> as an alternative, but I got into a real mess with variable expansion and protecting the bits that need protecting for the remote rsync path (which needs both quotes <em>and</em> backslashes for paths with spaces).</p> <p>So - I guess 2 questions - is there a reason that <code>eval</code> is preventing <code>rsync</code> from preserving ownership (the bash script is being run as root on the source machine, and <code>ssh</code>ing to the remote machine as root too - just for now)? And is there a way of getting <code>$()</code> to work in this scenario? The (trimmed) code is below:</p> <pre><code>#!/bin/bash RSYNC_CMD="/usr/bin/rsync" RSYNC_FLAGS="-az --rsh=\"/usr/bin/ssh -i \${DST_KEY}\"" # Protect ${DST_KEY} until it is assigned later SRC=${1} # Normally this is sense checked and processed to be a canonical path # Logic for setting DST based on command line parameter snipped for clarity - just directly assign for testing DST='root@some.server.com:' DST_KEY='/path/to/sshKey.rsa' TARG=${DST}${SRC//' '/'\ '} # Escape whitespace for target system eval ${RSYNC_CMD} ${RSYNC_FLAGS} \"${SRC}\" \"${TARG}\" # Put quotes round the paths - even though ${TARG} is already escaped # All synced OK - but ownership not preserved despite -a flag </code></pre> <p>I've tried changing <code>RSYNC_CMD</code> to <code>sudo /usr/bin/rsync</code>, and also adding <code>--rsync-path="sudo /usr/bin/rsync</code> to <code>RSYNC_FLAGS</code>, but neither made any difference. I just can't see what I'm missing...</p>
 

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