bash:rsync，选项作为变量 [英] bash: rsync with options as variable

问题描述

我正在编写bash脚本，该脚本在某种程度上将通过ssh同步文件.不幸的是，我在将rsync选项保持为变量时面临问题.请在下面看看:

I am writing bash script, which in some part will rsync files over ssh. Unfortunately I am facing problem with keeping rsync options as variable. Please take a look below:

    # variables
    directory="/etc"
    backupDirectory="/backup"
    incrementalBackup="/incremental"
    options="-a -e 'ssh -p 10022' -b --backup-dir=$incrementalBackup --delete"
    # rsync
    rsync $options user@server:$directory $backupDirectory

不幸的是，以上脚本由于出现rsync错误而失败:

Unfortunately above script fails with rsync error:

    Unexpected remote arg: user@server:/etc
    rsync error: syntax or usage error (code 1) at main.c(1201) [sender=3.0.6]

我在脚本调试期间看到的事实是，ssh选项('ssh -p 10022')被视为rsync选项.问题是如何正确地将那些其他ssh设置传递到rsync?预先感谢您的提示.

What I saw during script debugging is the fact, that ssh options ('ssh -p 10022') are treated as rsync options. The question is how to pass correctly those additional ssh settings into rsync? Thanks in advance for a tip.

推荐答案

使用 eval .试试:

eval rsync $options user@server:$directory $backupDirectory

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