Question

我是ruby的新手（这可能是我的第一个程序）而且我正在尝试创建一个安装pacman（包管理器）可选依赖项的脚本。我写了这段代码

#!/usr/bin/ruby
packs=""
exit if ARGV.count==0
ARGV.each do |arg|

    out=%x(LANG="C" pacman -Si #{arg})
    next if out.empty?

    packs+="{arg} "

    lines=out.split "\n"
    first=(lines[11].split ":")[1].strip 

    next if first == "None"

    packs+="#{first} "

    i=12
    while lines[i][0]==" " do

        packs+=(lines[i].split ":")[0].strip + " "
        i++

    end
end
exec ("pacman -S #{packs}")

但是当我尝试运行脚本时，我得到了这些错误：

    ./pacman-odep:24: syntax error, unexpected keyword_end
    ./pacman-odep:26: syntax error, unexpected end-of-input, expecting keyword_end

有什么问题？

编辑：如果需要，可以使用out变量等于此文本来测试脚本：

Repository     : extra
Name           : gimp
Version        : 2.8.14-2
Description    : GNU Image Manipulation Program
Architecture   : x86_64
URL            : http://www.gimp.org/
Licenses       : GPL  LGPL
Groups         : None
Provides       : None
Depends On     : pygtk  lcms  libxpm  libwmf  libxmu  librsvg  libmng  dbus-glib  libexif
                 gegl  jasper  desktop-file-utils  hicolor-icon-theme  babl  openexr
Optional Deps  : gutenprint: for sophisticated printing only as gimp has built-in cups print
                 support
                 webkitgtk2: for the help browser
                 poppler-glib: for pdf support
                 alsa-lib: for MIDI event controller module
                 curl: for URI support
                 ghostscript: for postscript support
Conflicts With : gimp-devel
Replaces       : None
Download Size  :  11.83 MiB
Installed Size :  65.23 MiB
Packager       : Tobias Powalowski <tpowa@archlinux.org>
Build Date     : Fri May 8 17:48:18 2015
Validated By   : MD5 Sum  SHA256 Sum  Signature

Answer 1

当前的问题是

exec ("pacman -S {packs})

它缺少一个语音标记，应该是：

exec ("pacman -S #{packs}")

第二个问题是使用i++。替换为i+=1。

语法错误，意外的keyword_end

1 个答案: