how to input a file as a variable in a shell script

Question

I need to input the path of a file in shell script as a variable and use the file in the same script.Suppose the path is /home/pi/dest/file and i want to use the file as a variable.Can anyone tell me the syntax to open specified path file

Answer 1

I think your question is not clear. But you can see below what I understood;

basename /home/pi/dest/file

basename command will give you the last component of the path.