OGS installation in Ubuntu 20.04

I want to install ogs in Ubuntu machine. I tried the installation steps given in the docs but it doesn’t generate ogs executable in bin directory:

Can anyone help me with the installation?

Thank you,

which steps did you do follow exactly?
after configuration you have to build ogs either by running make or ninja dependent on your configuration

I followed these steps on ggs source directory:

1. mkdir -p ../build/release
2. cd ../build/release
3. cmake ../../ogs -G Ninja -DCMAKE_BUILD_TYPE=Release
4. ninja

Do I need to do anything else?

The ninja command should build ogs.
However, in your screenshot above, it looks like that the last step you did was step 3.