Overview:

Simple NFS GUI is a Linux application that automates the whole NFS share configuration process. In NFS server mode, the tool automatically sets up the /etc/exports configuration. Security is enforced via /etc/hosts.deny and /etc/hosts.allow. In NFS client mode, the application automatically creates a directory for the mount point by adding the NFS mount to the /etc/fstab file with the necessary users option as required for accessing by non-root users.

# Source: https://github.com/Philippe734/Simple.NFS.GUI

# Installation
sudo add-apt-repository ppa:gambas-team/gambas3 -y && sudo apt-get update
wget https://raw.githubusercontent.com/Philippe734/Simple.NFS.GUI/master/Linux/1.0.16/simple-nfs-gui_1.0.16-0ubuntu1_all.deb -P ~ && sudo dpkg -i ~/simple-nfs-gui_1.0.16-0ubuntu1_all.deb
sudo apt-get install -fy && rm ~/simple-nfs-gui_1.0.16-0ubuntu1_all.deb && sudo -H Simple_NFS_GUI

# Run Application
sudo -H Simple_NFS_GUI
# Log of installation
kim@kim-linux:~$ sudo add-apt-repository ppa:gambas-team/gambas3 -y && sudo apt-get update && wget https://raw.githubusercontent.com/Philippe734/Simple.NFS.GUI/master/Linux/1.0.16/simple-nfs-gui_1.0.16-0ubuntu1_all.deb -P ~ && sudo dpkg -i ~/simple-nfs-gui_1.0.16-0ubuntu1_all.deb && sudo apt-get install -fy && rm ~/simple-nfs-gui_1.0.16-0ubuntu1_all.deb && sudo -H Simple_NFS_GUI
You are about to add the following PPA:
 More info: https://launchpad.net/~gambas-team/+archive/ubuntu/gambas3
Executing: /tmp/apt-key-gpghome.jtw69cec1c/gpg.1.sh --keyserver hkps://keyserver.ubuntu.com:443 --recv-keys BEC4D34EA23B1DA104D3F98450B027516CAEE58D
gpg: key 50B027516CAEE58D: public key "Launchpad PPA for Gambas Ubuntu Maintainers" imported
gpg: Total number processed: 1
gpg:               imported: 1
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Reading package lists... Done
--2021-10-26 10:38:51--  https://raw.githubusercontent.com/Philippe734/Simple.NFS.GUI/master/Linux/1.0.16/simple-nfs-gui_1.0.16-0ubuntu1_all.deb
Resolving github.com (github.com)... 192.30.255.112
Connecting to github.com (github.com)|192.30.255.112|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://raw.githubusercontent.com/Philippe734/Simple.NFS.GUI/master/Linux/1.0.16/simple-nfs-gui_1.0.16-0ubuntu1_all.deb [following]
--2021-10-26 10:38:51--  https://raw.githubusercontent.com/Philippe734/Simple.NFS.GUI/master/Linux/1.0.16/simple-nfs-gui_1.0.16-0ubuntu1_all.deb
Resolving raw.githubusercontent.com (raw.githubusercontent.com)... 185.199.108.133, 185.199.109.133, 185.199.110.133, ...
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HTTP request sent, awaiting response... 200 OK
Length: 29220 (29K) [application/octet-stream]
Saving to: ‘/home/kim/simple-nfs-gui_1.0.16-0ubuntu1_all.deb’

simple-nfs-gui_1.0. 100%[===================>]  28.54K  --.-KB/s    in 0.002s  

2021-10-26 10:38:51 (13.8 MB/s) - ‘/home/kim/simple-nfs-gui_1.0.16-0ubuntu1_all.deb’ saved [29220/29220]

Selecting previously unselected package simple-nfs-gui.
(Reading database ... 388728 files and directories currently installed.)
Preparing to unpack .../simple-nfs-gui_1.0.16-0ubuntu1_all.deb ...
Unpacking simple-nfs-gui (1.0.16-0ubuntu1) ...
dpkg: dependency problems prevent configuration of simple-nfs-gui:
 simple-nfs-gui depends on gambas3-runtime (>= 3.14); however:
  Package gambas3-runtime is not installed.
 simple-nfs-gui depends on gambas3-runtime (<< 3.99.0); however:
  Package gambas3-runtime is not installed.
 simple-nfs-gui depends on gambas3-gb-form (>= 3.14); however:
  Package gambas3-gb-form is not installed.
 simple-nfs-gui depends on gambas3-gb-form (<< 3.99.0); however:
  Package gambas3-gb-form is not installed.
 simple-nfs-gui depends on gambas3-gb-gtk3 (>= 3.14); however:
  Package gambas3-gb-gtk3 is not installed.
 simple-nfs-gui depends on gambas3-gb-gtk3 (<< 3.99.0); however:
  Package gambas3-gb-gtk3 is not installed.
 simple-nfs-gui depends on gambas3-gb-image (>= 3.14); however:
  Package gambas3-gb-image is not installed.
 simple-nfs-gui depends on gambas3-gb-image (<< 3.99.0); however:
  Package gambas3-gb-image is not installed.

dpkg: error processing package simple-nfs-gui (--install):
 dependency problems - leaving unconfigured
Processing triggers for gnome-menus (3.36.0-1ubuntu1) ...
Processing triggers for desktop-file-utils (0.24+linuxmint1) ...
Processing triggers for mime-support (3.64ubuntu1) ...
Processing triggers for hicolor-icon-theme (0.17-2) ...
Errors were encountered while processing:
 simple-nfs-gui

# Attempting to install the missing library
kim@kim-linux:~$ sudo apt install gambas3-gb-form -y
Reading package lists... Done
Building dependency tree       
Reading state information... Done
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
 gambas3-gb-form : Depends: gambas3-runtime (>= 3.16.3+git202109141524.185a3d4a3+build15~ubuntu20.04.1) but it is not going to be installed
                   Depends: gambas3-gui (>= 3.16.3+git202109141524.185a3d4a3+build15~ubuntu20.04.1) but it is not going to be installed
 simple-nfs-gui : Depends: gambas3-runtime (>= 3.14) but it is not going to be installed
                  Depends: gambas3-runtime (< 3.99.0) but it is not going to be installed
                  Depends: gambas3-gb-gtk3 (>= 3.14) but it is not going to be installed
                  Depends: gambas3-gb-gtk3 (< 3.99.0) but it is not going to be installed
                  Depends: gambas3-gb-image (>= 3.14) but it is not going to be installed
                  Depends: gambas3-gb-image (< 3.99.0) but it is not going to be installed
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).

# Fix the broken installs
kim@kim-linux:~$ sudo apt --fix-broken install
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Correcting dependencies... Done
The following additional packages will be installed:
  gambas3-gb-form gambas3-gb-gtk gambas3-gb-gtk3 gambas3-gb-gtk3-wayland
  gambas3-gb-gtk3-x11 gambas3-gb-image gambas3-gui gambas3-runtime
The following NEW packages will be installed:
  gambas3-gb-form gambas3-gb-gtk gambas3-gb-gtk3 gambas3-gb-gtk3-wayland
  gambas3-gb-gtk3-x11 gambas3-gb-image gambas3-gui gambas3-runtime
0 upgraded, 8 newly installed, 0 to remove and 4 not upgraded.
1 not fully installed or removed.
Need to get 1,190 kB of archives.
After this operation, 4,682 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://ppa.launchpad.net/gambas-team/gambas3/ubuntu/ focal/main amd64 gambas3-runtime amd64 3.16.3+git202109141524.185a3d4a3+build15~ubuntu20.04.1 [522 kB]
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Get:7 http://ppa.launchpad.net/gambas-team/gambas3/ubuntu/ focal/main amd64 gambas3-gui all 3.16.3+git202109141524.185a3d4a3+build15~ubuntu20.04.1 [6,380 B]
Get:8 http://ppa.launchpad.net/gambas-team/gambas3/ubuntu/ focal/main amd64 gambas3-gb-form all 3.16.3+git202109141524.185a3d4a3+build15~ubuntu20.04.1 [218 kB]
Fetched 1,190 kB in 1min 22s (14.6 kB/s)                                       
Selecting previously unselected package gambas3-runtime.
(Reading database ... 388744 files and directories currently installed.)
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15~ubuntu20.04.1_amd64.deb ...
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1) ...
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.1) ...
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) ...
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uild15~ubuntu20.04.1_amd64.deb ...
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.04.1) ...
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a3+build15~ubuntu20.04.1_amd64.deb ...
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tu20.04.1) ...
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1) ...
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buntu20.04.1_all.deb ...
Unpacking gambas3-gui (3.16.3+git202109141524.185a3d4a3+build15~ubuntu20.04.1) .
..
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15~ubuntu20.04.1_all.deb ...
Unpacking gambas3-gb-form (3.16.3+git202109141524.185a3d4a3+build15~ubuntu20.04.
1) ...
Setting up gambas3-runtime (3.16.3+git202109141524.185a3d4a3+build15~ubuntu20.04
.1) ...
Setting up gambas3-gb-image (3.16.3+git202109141524.185a3d4a3+build15~ubuntu20.0
4.1) ...
Setting up gambas3-gb-gtk (3.16.3+git202109141524.185a3d4a3+build15~ubuntu20.04.
1) ...
Setting up gambas3-gui (3.16.3+git202109141524.185a3d4a3+build15~ubuntu20.04.1) 
...
Setting up gambas3-gb-form (3.16.3+git202109141524.185a3d4a3+build15~ubuntu20.04
.1) ...
Setting up gambas3-gb-gtk3-wayland (3.16.3+git202109141524.185a3d4a3+build15~ubu
ntu20.04.1) ...
Setting up gambas3-gb-gtk3 (3.16.3+git202109141524.185a3d4a3+build15~ubuntu20.04
.1) ...
Setting up gambas3-gb-gtk3-x11 (3.16.3+git202109141524.185a3d4a3+build15~ubuntu2
0.04.1) ...
Setting up simple-nfs-gui (1.0.16-0ubuntu1) ...
Processing triggers for shared-mime-info (1.15-1) ...
Processing triggers for hicolor-icon-theme (0.17-2) ...
Processing triggers for man-db (2.9.1-1) ...

# Test triggering the application
kim@kim-linux:~$ sudo -H Simple_NFS_GUI

Screenshots: