lfs-book-i18n/zh_CN/chapter09/introduction.po

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#. type: Content of: <sect1><title>
msgid "Introduction"
msgstr "概述"

#. type: Content of: <sect1><para>
msgid ""
"Booting a Linux system involves several tasks.  The process must mount both "
"virtual and real file systems, initialize devices, activate swap, check file "
"systems for integrity, mount any swap partitions or files, set the system "
"clock, bring up networking, start any daemons required by the system, and "
"accomplish any other custom tasks needed by the user.  This process must be "
"organized to ensure the tasks are performed in the correct order but, at the "
"same time, be executed as fast as possible."
msgstr ""
"引导 Linux 系统需要完成若干任务。引导过程必须挂载虚拟和真实文件系统、初始化设"
"备、启用交换、检查文件系统完整性、挂载所有交换分区或文件、设定系统时钟、启"
"用网络、启动系统需要的守护进程，并完成用户自定义的其他工作。引导过程必须被组"
"织好，以保证这些任务以正确顺序进行，并以尽量快的速度完成。"

#. type: Content of: <sect1><sect2><title>
msgid "System V"
msgstr "System V"

#. type: Content of: <sect1><sect2><para>
msgid ""
"System V is the classic boot process that has been used in Unix and Unix-"
"like systems such as Linux since about 1983.  It consists of a small "
"program, <command>init</command>, that sets up basic programs such as "
"<command>login</command> (via getty) and runs a script.  This script, "
"usually named <command>rc</command>, controls the execution of a set of "
"additional scripts that perform the tasks required to initialize the system."
msgstr ""
"System V 是自 1983 年以来就在 Unix 和 Linux 等类 Unix 系统中被广泛应用的经典"
"引导过程。它包含一个小程序 <command>init</command>，该程序设定 "
"<command>login</command> (通过 getty)并运行一个脚本。该脚本一般被命名为 "
"<command>rc</command>，控制一组附加脚本的运行，这些附加脚本完成初始化系统需要"
"的各项工作。"

#. type: Content of: <sect1><sect2><para>
msgid ""
"The <command>init</command> program is controlled by the <filename>/etc/"
"inittab</filename> file and is organized into run levels that can be run by "
"the user:"
msgstr ""
"<command>init</command> 程序受到 <filename>/etc/inittab</filename> 文件的控"
"制，被组织为用户可以选择的系统运行级别："

#. type: Content of: <sect1><sect2><literallayout>
#, no-wrap
msgid ""
"0 &mdash; halt\n"
"1 &mdash; Single user mode\n"
"2 &mdash; Multiuser, without networking\n"
"3 &mdash; Full multiuser mode\n"
"4 &mdash; User definable\n"
"5 &mdash; Full multiuser mode with display manager\n"
"6 &mdash; reboot"
msgstr ""
"0 &mdash; 停止运行\n"
"1 &mdash; 单用户模式\n"
"2 &mdash; 多用户模式，没有网络\n"
"3 &mdash; 完整的多用户模式\n"
"4 &mdash; 用户自定义模式\n"
"5 &mdash; 拥有显示管理器的完整多用户模式\n"
"6 &mdash; 重启系统"

#. type: Content of: <sect1><sect2><para>
msgid "The usual default run level is 3 or 5."
msgstr "通常的默认运行级别是 3 或 5。"

#. type: Content of: <sect1><sect2><bridgehead>
msgid "Advantages"
msgstr "优点"

#. type: Content of: <sect1><sect2><itemizedlist><listitem><para>
msgid "Established, well understood system."
msgstr "完备的，已经被详细理解的系统。"

#. type: Content of: <sect1><sect2><itemizedlist><listitem><para>
msgid "Easy to customize."
msgstr "容易定制。"

#. type: Content of: <sect1><sect2><bridgehead>
msgid "Disadvantages"
msgstr "缺点"

#. type: Content of: <sect1><sect2><itemizedlist><listitem><para>
msgid ""
"May be slower to boot.  A medium speed base LFS system takes 8-12 seconds "
"where the boot time is measured from the first kernel message to the login "
"prompt.  Network connectivity is typically established about 2 seconds after "
"the login prompt."
msgstr ""
"引导速度较慢。一个中等速度的基本 LFS 系统从第一个内核消息开始，到出现登录提示"
"符为止，需要 8-12 秒的引导时间，之后还需要约 2 秒启动网络连接。"

#. type: Content of: <sect1><sect2><itemizedlist><listitem><para>
msgid ""
"Serial processing of boot tasks. This is related to the previous point.  A "
"delay in any process such as a file system check, will delay the entire boot "
"process."
msgstr ""
"串行执行引导任务，这与前一项缺点相关。引导过程中的延迟 (如文件系统检查) 会拖"
"延整个引导过程。"

#. type: Content of: <sect1><sect2><itemizedlist><listitem><para>
msgid ""
"Does not directly support advanced features like control groups (cgroups), "
"and per-user fair share scheduling."
msgstr "不支持控制组 (cgroups)、每用户公平共享调度等高级特性。"

#. type: Content of: <sect1><sect2><itemizedlist><listitem><para>
msgid "Adding scripts requires manual, static sequencing decisions."
msgstr "添加脚本时，需要手动决定它在引导过程中的次序。"