Changeset 96323bd for chapter04/settingenviron.xml

Timestamp:

10/02/2022 01:49:39 PM (19 months ago)

Author:

Xi Ruoyao <xry111@…>

Branches:

xry111/arm64, xry111/arm64-12.0

Children:

1dcfd50

Parents:

111194c (diff), 6582ddc5 (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merge remote-tracking branch 'origin/trunk' into xry111/arm64

File:

• chapter04/settingenviron.xml (modified) (6 diffs)

chapter04/settingenviron.xml

@@ -20 +20 @@
 EOF</userinput></screen>
 
-  <para>When logged on as user <systemitem class="username">lfs</systemitem>,
-  the initial shell is usually a <emphasis>login</emphasis> shell which reads
+  <para>When logged on as user <systemitem class="username">lfs</systemitem>
+  or switched to the &lfs-user; user using a <command>su</command> command
+  with <quote><parameter>-</parameter></quote> option,
+  the initial shell is a <emphasis>login</emphasis> shell which reads
   the <filename>/etc/profile</filename> of the host (probably containing some
   settings and environment variables) and then <filename>.bash_profile</filename>.
@@ -33 +35 @@
 
   <para>The new instance of the shell is a <emphasis>non-login</emphasis>
-  shell, which does not read, and execute, the contents of <filename>/etc/profile</filename> or
+  shell, which does not read, and execute, the contents of the <filename>/etc/profile</filename> or
   <filename>.bash_profile</filename> files, but rather reads, and executes, the
   <filename>.bashrc</filename> file instead. Create the
@@ -60 +62 @@
   <command>bash</command>'s hash function. Hashing is ordinarily a useful
   feature&mdash;<command>bash</command> uses a hash table to remember the
-  full path of executable files to avoid searching the <envar>PATH</envar>
+  full path to executable files to avoid searching the <envar>PATH</envar>
   time and again to find the same executable. However, the new tools should
-  be used as soon as they are installed. By switching off the hash function,
-  the shell will always search the <envar>PATH</envar> when a program is to
+  be used as soon as they are installed. Switching off the hash function forces
+  the shell to search the <envar>PATH</envar> whenever a program is to
   be run. As such, the shell will find the newly compiled tools in
   <filename class="directory">$LFS/tools/bin</filename> as soon as they are
@@ -116 +118 @@
       <term><parameter>PATH=/usr/bin</parameter></term>
       <listitem>
-  <para>Many modern linux distributions have merged <filename
+  <para>Many modern Linux distributions have merged <filename
   class="directory">/bin</filename> and <filename
   class="directory">/usr/bin</filename>. When this is the case, the standard
-  <envar>PATH</envar> variable needs just to be set to <filename
+  <envar>PATH</envar> variable should be set to <filename
   class="directory">/usr/bin/</filename> for the <xref
   linkend="chapter-temporary-tools"/> environment. When this is not the
@@ -142 +144 @@
   of <xref linkend="chapter-cross-tools"/> is picked up by the shell
   immediately after its installation. This, combined with turning off hashing,
-  limits the risk that the compiler from the host be used instead of the
+  limits the risk that the compiler from the host is used instead of the
   cross-compiler.</para>
       </listitem>
@@ -196 +198 @@
 
   <para>Finally, to have the environment fully prepared for building the
-  temporary tools, source the just-created user profile:</para>
+  temporary tools, force the <command>bash</command> shell to read
+  the new user profile:</para>
 
 <screen><userinput>source ~/.bash_profile</userinput></screen>