I have downloaded a tarball for installing Firefox. Once it’s unpacked, the /configure command does not work. I happened to notice that the unpacked folder contains configure, read me, or install files, but the error says
configure no such file
What should I do?
Ubuntu comes with Firefox by default. If you’ve removed it and wish to reintall it, it’s available in the standard repositories. You can either use the point-and-click graphical interface of the Software Center or simply type
sudo apt-get install firefox
on the Terminal.
If you do wish to install Firefox (or any other program) from a tarball, you’ll need to be careful to enter exactly the commands you should. As Eduardo Cola said in a comment on your question, you probably want ./configure, with an initial dot. The command /configure will try to run a script in the root directory called configure: no such script exists, hence your error message. The same command with an initial dot will run the script called configure in your current directory, which you say does exist.
Use the version of firefox in the repositories
https://help.ubuntu.com/community/InstallingSoftware
If for some reason you need a newer version, use a ppa
See How do I install the latest stable version of Firefox?
If you are trying to compile from source see https://developer.mozilla.org/en-US/docs/Simple_Firefox_build and post the command(s) you ran and any error message.
