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linuxbashsshquoting

Escaping quotes when using SSH


I'm trying to build a simple deployment script for my PHP apps. I know there are several tools for this job (Capistrano, Phing, etc.) but they seem like a lot of work for my simple deployment routine.

I use sshpass to avoid typing my password over and over again. But after uploading my compressed installer, I need to ssh into the server and run some commands. One of which is sed. So, quotes are breaking my script. It's something like this:

sshpass -p foo ssh user@host "
   cd /www/htdocs/foo/bar 
   echo 'Untar and remove installer'
   tar -zxf install.tar.gz

   sed "s/define('ENVIRONMENT', 'development');/define('ENVIRONMENT', 'production');" index.php > tmp && mv tmp index.php
   sed "s/define('ENVIRONMENT', 'development');/define('ENVIRONMENT', 'production');/" admin/index.php > tmp && mv tmp admin/index.php

"

As you can see, I use double-quotes to start my SSH statements, but I also need to use them on sed.

Any suggestions would be greatly appreciated. Thanks!


Solution

  • Escaping the internal quote marks is the normal way. Does this not work?

    sshpass -p foo ssh user@host "
    cd /www/htdocs/foo/bar
    echo 'Untar and remove installer'
    tar -zxf install.tar.gz
    
    sed \"s/define('ENVIRONMENT', 'development');/define('ENVIRONMENT', 'production');\" index.php > tmp && mv tmp index.php
    sed \"s/define('ENVIRONMENT', 'development');/define('ENVIRONMENT', 'production');/\" admin/index.php > tmp && mv tmp admin/index.php
    
    "