Originally Posted by imranbatish
can anyone tell me how to install linux from iso image
If you have a DVD writer then write that ISO to a DVD and boot using that DVD and follow instructions.
If you dont have a DVD writer, and you want to install directly from ISO from say a hard-disk then you should google for instructions. If you face a problem then come back here with question(s).
For example Fedora documentation has detailed installation guide.