我在redhat9安装arm-linux-gcc4.4.3出现如下问题，请帮忙指教是什么问题，谢谢！

[root@localhost gaopeng]# arm-linux-gcc -v
/opt/FriendlyARM/toolschain/4.4.3/bin/arm-linux-gcc: line 1: readlink: command n
ot found
/opt/FriendlyARM/toolschain/4.4.3/bin/arm-linux-gcc: line 1: dirname: command no
t found
/opt/FriendlyARM/toolschain/4.4.3/bin/arm-linux-gcc: line 1: basename: command n
ot found
/opt/FriendlyARM/toolschain/4.4.3/bin/arm-linux-gcc: line 1: dirname: command no
t found
/opt/FriendlyARM/toolschain/4.4.3/bin/arm-linux-gcc: line 15: /.: is a directory
/opt/FriendlyARM/toolschain/4.4.3/bin/arm-linux-gcc: line 15: exec: /.: cannot e
xecute: 成功