I would like to make a bash script that will iterate over different user agent options, open Firefox with the selected user agent, wait for x seconds, and then close, and loop.
Is there a command-line option for firefox to specify the user agent?
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Grisha Levit
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carlos_godfather
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Posted code was completely irrelevant to the question. Reworked question to focus on the actual issue. – Grisha Levit Feb 11 '17 at 03:25
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There is no flag for this specific purpose, but you can create a set of Firefox profiles, where each profile will specify a particular user agent.
There is an about:config option general.useragent.override, which you can specify in the user.js file in the profile folder with a line like:
user_pref("general.useragent.override", "Mozilla/5.0 AppleWebKit/…")
You can then start Firefox with the -P flag, providing the name to the specific profile.
Grisha Levit
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I had more luck with `general.useragent.override` . See [this question](https://superuser.com/questions/98798/how-do-i-change-firefoxs-user-agent-via-aboutconfig) as well. Thanks! – Greg Sadetsky May 24 '22 at 17:37