Launching GIFs from the Terminal


Did you know that you can launch a playing GIF from the Terminal? I didn’t until today; but it’s really quite simple.

I’m working on deploying a new feature to my Mac users and wanted an easy way to show them how it works. I could launch a web-browser linking to a specific support article but wanted something that was simple and caused less friction which is where the thought of displaying a GIF to them after the Policy ran came to mind.

If you run open -a /path/to/super-cool-gif.gif, the GIF will open in Preview but won’t be animated 🙁.

Preview

What I actually wanted was this 😃!

Animation

QuickLook will display GIFs in an animated fashion and as I leanrnt today from an 11 year old superuser post, you can trigger this from the Terminal with qlmanage -p.

When you have your super cool GIF to display for a user, make sure you’re running this command from the specified user’s context. In my case it was included in an Outset OnDemand script which would fire after the Policy executes but you could also try via sudo -u.

#!/bin/bash
# Outset OnDemand running via Jamf Pro Script Policy

loggedInUser=$( echo "show State:/Users/ConsoleUser" | scutil | awk '/Name :/ && ! /loginwindow/ { print $3 }' )
onDemand=/usr/local/outset/on-demand/show-gif.sh

/bin/cat > "$onDemand" << EOF
#!/bin/bash

qlmanage -p "/path/to/super-cool-gif.gif" 2>/dev/null

exit 0
EOF

chown root:wheel "$onDemand"
chmod 755 "$onDemand"

sudo -u "$loggedInUser" /usr/local/outset/outset --on-demand

exit 0
#!/bin/bash
# Running directly in script via Jamf Pro Policy

loggedInUser=$( echo "show State:/Users/ConsoleUser" | scutil | awk '/Name :/ && ! /loginwindow/ { print $3 }' )

sudo -u "$loggedInUser" qlmanage -p "/path/to/super-cool-gif.gif" 2>/dev/null

exit 0

In both of these examples, I’ve added 2>/dev/null because the qlmanage process is quite chatty.

Hope this helps!


Related Posts

Automatic Configuration of Zoom Rooms on macOS & iOS

How I Learned to Stop Worrying (about DEP) and Love the Nuke & Pave

Creating APFS Snapshots at the Setup Assistant

Setting a Random Wallpaper at Enrolment

JNUC 2017 Videos

Culture First Onboarding at JNUC 2017

Greece

Programming YubiKeys in a VM

Using ElastiCache with Jamf Pro in Clustered Environments

Connecting Gooogle Calendar & Zoom with Zapier