I am having following syntax for one of my file.Could you please anyone explain me what is this command doing

```
    path = /document/values.txt

```

where we have different username specified e.g username1 = john,username2=marry

```
    cat ${path} | grep -e  username1 | cut -d'=' -f2`

```

my question here is cat command is reading from the file value of username1 but why why we need to use cut command?