Installing and running Postman app on linux (REHL 8.x)

in less than 5 minutes

If you are a Linux user such as Red Hat ( REHL), chances are high that you are a fan of command line (CLI / terminal).

If the answer is YES ! ✔️

Let us set up postman for you in less than 5 minutes ! yes 5️⃣

For simplification I will use the term " terminal “ in this article

Red had linux 8.4 with postman app

Lets get started !

Snaps are app packages for desktop, cloud and IoT….

Tip! Think of snap (snapd) as a playstore /appstore for your linux OS need more info go here

Pro Tip! — If you already have Snap installed jump to 🔗 Step #4

Step #1: Install epel-release-latest

EPEL has an ‘epel-release’ package that includes gpg keys for package signing and repository information.More about epel here

we will use ( -q, — quiet : quiet operation) to get less noise on terminal, you can skip using -q if you like the noise :)

Open your terminal and copy paste the command and hit enter !

so, 🏃 run on terminal ⬛ ️

sudo dnf -q install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm

Something like this will happen
note: You may have timestamp in your local time format

sudo dnf -q install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
Last metadata expiration check: 0:15:36 ago on Sat 11 Sep 2021 11:20:48 AEST.
epel-release-latest-8.noarch.rpm 20 kB/s | 23 kB 00:01
Package epel-release-8–11.el8.noarch is already installed.
Dependencies resolved.
Nothing to do.
Complete!

Step #2: Update current state of your dnf

DNF or Dandified YUM is the next-generation version of the Yellowdog Updater, Modified, a package manager for .rpm-based distributions.

🏃 run on terminal ⬛ ️

sudo dnf -q upgrade

note: If you see any prompt like this , have a look and type y + enter

Step #3: Install snapd a.k.a snap

🏃 run on terminal ⬛ ️

sudo yum install snapd

sudo yum install snapd
Last metadata expiration check: 0:56:46 ago on Sat 11 Sep 2021 11:20:48 AEST.
Package snapd-2.51.7–1.el8.x86_64 is already installed.
Dependencies resolved.
Nothing to do.
Complete!

Step #3.1: Enable systemd:

Once installed, the systemd unit that manages the main snap communication socket needs to be enabled

sudo systemctl enable — now snapd.socket
Created symlink /etc/systemd/system/sockets.target.wants/snapd.socket → /usr/lib/systemd/system/snapd.socket.

Step #3.2: verify installation of snap

Open a new terminal or if you can reboot your system for changes to take effect

🏃 run on terminal ⬛ ️

snap version

snap version
snap 2.51.7–1.el8
snapd 2.51.7–1.el8
series 16
rhel 8.4
kernel 4.18.0–305.17.1.el8_4.x86_64

note: All the details above are updated as on Mid September 2021.
Your versions may be different for you, the idea is to get similar output successfully.

Finally 🎉

Step #4: Install postman app 🎽

Tip ( you can install any app/package available on snap(d) if you are at this step

🏃 run on terminal ⬛ ️

sudo snap install postman

sudo snap install postman
Download snap “snapd” (12883) from channel “stable” 2021–09–11T12:27:50+10:00 INFO Waiting for automatic snapd restart…
postman (v8/stable) 8.12.2 from Postman, Inc. (postman-inc✓) installed

Step #4.1: verify installation of postman ✔️

🏃 run on terminal ⬛

snap list

snap list
Name Version Rev Tracking Publisher Notes
core18 20210722 2128 latest/stable canonical✓ base
postman 8.12.2 147 v8/stable postman-inc✓ -
snapd 2.51.4 12883 latest/stable canonical✓ snapd

That’s it 👉 postman 8.12.2 147 v8/stable postman-inc✓ -

Step #4.2: Just verify postman specifically ! ✔️✔️

If you have a very long list of snap apps, perhaps try this:

🏃 run on terminal ⬛ ️

snap list postman

snap list postman
Name Version Rev Tracking Publisher Notes
postman 8.12.2 147 v8/stable postman-inc✓ -

Step #5: Running /Launching the postman app 🏃

running postman should be easy

🏃 run on terminal ⬛ ️

postman

or

snap run postman

postman app launching on linux system

postman app on linux syste

By the way, by this time you may see it installed under your apps.. 💻 type “ postman”

Postman app installed on linux ( REHL 8.4)

Step #X: Troubleshooting 👷

Sometimes the sky is not blue ☁️ and you may get some error 😩

You have my hand 👐 here is what I faced and worked around , hopefully will save some of your time

💥 If you start seeing some weird issues around GPU.. that I faced during my setup ( this screen: postman app launching on linux system) 🚧

The disableGPU setting is set to undefined
Not disabling GPU

Don’t worry its a known and open issue at postman. See my comment here

Solution 💠 for me a simple machine reboot did the magic ♻️