執行./arm-2009q1-203-arm-none-linux-gnueabi.bin命令時，出現如下提示：
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。
進入/bin，運行 ls -l
發現sh默認指向dash而不是bash，所以只要讓sh指向bash就好了，
於是刪除sh到dash的軟鏈接
sudo rm -f sh
再建立sh 到bash的軟鏈接
sudo ln -s /bin/bash /bin/sh
必須要加sudo，否則權限不夠.
解決！