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

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#. type: Content of: <sect1><title>
#: /home/xry111/svn-repos/LFS-BOOK/chapter09/introduction.xml:11
msgid "Introduction"
msgstr ""

#. type: Content of: <sect1><para>
#: /home/xry111/svn-repos/LFS-BOOK/chapter09/introduction.xml:13
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 ""

#. type: Content of: <sect1><sect2><title>
#: /home/xry111/svn-repos/LFS-BOOK/chapter09/introduction.xml:22
msgid "System V"
msgstr ""

#. type: Content of: <sect1><sect2><para>
#: /home/xry111/svn-repos/LFS-BOOK/chapter09/introduction.xml:24
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 ""

#. type: Content of: <sect1><sect2><para>
#: /home/xry111/svn-repos/LFS-BOOK/chapter09/introduction.xml:32
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 ""

#. type: Content of: <sect1><sect2><literallayout>
#: /home/xry111/svn-repos/LFS-BOOK/chapter09/introduction.xml:36
#, 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 ""

#. type: Content of: <sect1><sect2><para>
#: /home/xry111/svn-repos/LFS-BOOK/chapter09/introduction.xml:44
msgid "The usual default run level is 3 or 5."
msgstr ""

#. type: Content of: <sect1><sect2><bridgehead>
#: /home/xry111/svn-repos/LFS-BOOK/chapter09/introduction.xml:46
msgid "Advantages"
msgstr ""

#. type: Content of: <sect1><sect2><itemizedlist><listitem><para>
#: /home/xry111/svn-repos/LFS-BOOK/chapter09/introduction.xml:50
msgid "Established, well understood system."
msgstr ""

#. type: Content of: <sect1><sect2><itemizedlist><listitem><para>
#: /home/xry111/svn-repos/LFS-BOOK/chapter09/introduction.xml:54
msgid "Easy to customize."
msgstr ""

#. type: Content of: <sect1><sect2><bridgehead>
#: /home/xry111/svn-repos/LFS-BOOK/chapter09/introduction.xml:60
msgid "Disadvantages"
msgstr ""

#. type: Content of: <sect1><sect2><itemizedlist><listitem><para>
#: /home/xry111/svn-repos/LFS-BOOK/chapter09/introduction.xml:64
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 ""

#. type: Content of: <sect1><sect2><itemizedlist><listitem><para>
#: /home/xry111/svn-repos/LFS-BOOK/chapter09/introduction.xml:72
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 ""

#. type: Content of: <sect1><sect2><itemizedlist><listitem><para>
#: /home/xry111/svn-repos/LFS-BOOK/chapter09/introduction.xml:78
msgid ""
"Does not directly support advanced features like control groups (cgroups), "
"and per-user fair share scheduling."
msgstr ""

#. type: Content of: <sect1><sect2><itemizedlist><listitem><para>
#: /home/xry111/svn-repos/LFS-BOOK/chapter09/introduction.xml:83
msgid "Adding scripts requires manual, static sequencing decisions."
msgstr ""