We will use ewfmount for mounting EWF file. ewfmount is part of ewf-tools. ewf-tools is collection of tools for reading and writing EWF files.
$ sudo apt-get install ewf-tools
Create a directory for mounting image file
$ sudo mkdir -p /mnt/MalforensicsLab/Evidences/Case01/
Change Folder Ownership currently logged in user
$ sudo chown Malforensics /mnt/MalforensicsLab/Evidences/Case01/
Mount Disk Image
$ ewfmount DISKIMAGEFILENAME.E01 /mnt/MalforensicsLab/Evidences/Case01/
You will find actual disk image file at /mnt/MalforensicsLab/Evidences/Case01/ewf1. Now you can use any other tool for mounting individual partition or do analysis.
For example to get offset and partition information, use mmls from sluethkit
$ sudo apt-get install sleuthkit
Get offset and partition information from disk image
$ mmls /mnt/MalforensicsLab/Evidences/Case01/ewf1
Once analysis is completed and you want to unmount Disk Image file, run
$ sudo umount /mnt/MalforensicsLab/Evidences/Case01/