Ubuntu安装codesourcery交叉编译器的问题

安装交叉编译器出问题了,

./arm-2010q1-202-arm-none-linux-gnueabi.bin

错误信息如下;

Checking for required programs: awk grep sed bzip2 gunzip
===============================================================
Error: DASH shell not supported as system shell
===============================================================
The installer has detected that your system uses the dash shell
as /bin/sh.  This shell is not supported by the installer.
You can work around this problem by changing /bin/sh to be a
symbolic link to a supported shell such as bash.
For example, on Ubuntu systems, execute this shell command:
   % sudo dpkg-reconfigure -plow dash
   Install as /bin/sh? No
Please refer to the Getting Started guide for more information,
or contact CodeSourcery Support for assistance.

Google搜:


http://www.51testing.com/html/38/225738-208702.html

 


Ubuntu下sh默认指向dash 。
echo $SHELL  -->  /bin/bash
type sh      -->  /bin/sh
然后我到/bin下看了有"sh -> dash",原来sh是/bin/dash的链接。
后来google了一下才发现,buntu6.10已将先前默认的bashshell更换为了dash。其表现是/bin/sh链接到了/bin/dash而不是传统的/bin/bash。
bash - GNU Bourne-Again SHell
dash - Debian Almquist Shell
可以分别man bash  / man dash看一下。

那么怎么把sh改为指向bash呢?
最暴力的方法当然是直接把/bin/sh的软链接改到bash中,
如:ln -s /bin/bash /bin/sh
但是,有优雅一些的方法,
sudo dpkg-reconfigure dash
出现菜单问你是否要dash的时候,选no就可以了。

先看看链接:

cuigang@cui:~$ ls -l /bin/sh
lrwxrwxrwx 1 root root 4 2010-10-12 17:04 /bin/sh -> dash

按照出错的提示信息

   sudo dpkg-reconfigure -plow dash
   Install as /bin/sh? No

就可以了,再看看链接:

cuigang@cui:~$ ls -l /bin/sh
lrwxrwxrwx 1 root root 4 2010-10-12 16:52 /bin/sh -> bash

那么Dash是什么东西呢

DASH

--------------------------------------------------------------------------------

Description
DASH is a POSIX-compliant implementation of /bin/sh that aims to be as small as possible. It does this without sacrificing speed where possible. In fact, it is significantly faster than bash (the GNU Bourne-Again SHell) for most tasks.

比bash小而快的东西

 

本文来自CSDN博客,转载请标明出处:http://blog.csdn.net/cgipro/archive/2010/10/12/5936262.aspx

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