shell program in mainframe os

1. Locate build.number in the input file. Get the value and increment the value to next number for every run.
2. Have a some parm=value in input file. From shell read these and use it in the shell, pass it to another shell.
3. Take two file that have parm=value. From source file copy all the parms that exists in another file (target) with the values retrieved from the source file.