Hi,

At Thu, 22 Jan 2009 16:58:47 +0900,
Julien Biard wrote in [ruby-talk:325582]:
> I would like to execute call system on a filename with a backquote (`),
> but I don't know how to escape it.

Escaping depends on platforms.

> -> ls "[Shawn Lee]/10. Shawn Lee\`s Ping Pong Orchestra - Bollywood.mp3"
> -rw-r--r-- 1 hobs medias 3,0M 2009-01-18 15:16 [Shawn Lee]/10. Shawn
> Lee`s Ping Pong Orchestra - Bollywood.mp3
> 
> >> s = "[Shawn Lee]/10. Shawn Lee`s Ping Pong Orchestra - Bollywood.mp3"
> => "[Shawn Lee]/10. Shawn Lee`s Ping Pong Orchestra - Bollywood.mp3"

In 1.8.7 or later, Shellwords.escape exists.

  require 'shellwords'
  `ls #{Shellwords.escape(s)}`

Or, multiple arugment #exec bypasses shell.

  IO.popen("-") {|f| f or exec("ls", s); f.read}

In 1.9, IO.popen can handle an array argument.

  IO.popen(["ls", s], &:read)

-- 
Nobu Nakada