please help to fix the bash command not found error in tinyos
 

i am novice user to tinyos enviroment
i have problem with compiling , configuration , make etc
every time it gives bash command not found error
please do help me

No one can help you when you don't provide details. Saying "command not found" tells us nothing. How about telling us what exactly you're running, how, and what the exact error(s) are?? Unless you do that, no one will be able to help.

see . . . even if i am running simple blink application , the same error appears

like . ..
configuration blink{
bash : configuration:command not found

What do you expect "configuration blink{" to do? What exactly are you trying to run?

TinyOS is a Linux based system for programming micro-controller devices: http://www.tinyos.net/
The commands you gave us as example are not meant to be typed into a Bash shell, they need to be saved in a file and compiled. You can find instructions how to do so in the TinyOS Wiki, to test your system you can use the wiki-page about the simplest TinyOS program.

whatever i type in my it gives the same bash error

You have to type in the commands exactly like given on that site. The command is mkdir, not makedir. I would recommend to first learn a bit on how to work with the Linux command-line before proceeding with learning on how to work with TinyOS.