Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

What does %U means on /usr/bin/firefox &U

  • 1 reply
  • 20 have this problem
  • 1 view
  • Last reply by Cheng Wang

more options

I used GNU/Linux, and when I look the properties of desktop and panel shortcut to firefox the command are /usr/bin/firefox %U. What does %U means? When I typed it manually on my terminal it the firefox start and goes to http://www.%u.com/. But that not occured when I click on the shortcut. What is the reason for this different behaviour? Thanks in advance.

I used GNU/Linux, and when I look the properties of desktop and panel shortcut to firefox the command are /usr/bin/firefox %U. What does %U means? When I typed it manually on my terminal it the firefox start and goes to http://www.%u.com/. But that not occured when I click on the shortcut. What is the reason for this different behaviour? Thanks in advance.

Chosen solution

The %U represents a URL. If you drag a URL to the shortcut then it'll open that URL in Firefox.

Read this answer in context 👍 8

All Replies (1)

more options

Chosen Solution

The %U represents a URL. If you drag a URL to the shortcut then it'll open that URL in Firefox.