pat@vegas:~$ cd /home/pat/Téléchargements
pat@vegas:~/Téléchargements$ ls -a
.  ..  firefox-4.0b3.tar.bz2
pat@vegas:~/Téléchargements$ tar xvzf firefox-4.0b3.tar.bz2

gzip: stdin: not in gzip format
tar: Child returned status 1
tar: Arrêt avec code d'échec à cause des erreurs précédentes
pat@vegas:~/Téléchargements$ tar jxvf firefox-4.0b3.tar.bz2
tar: Taille de l'enregistrement = 8 blocs
firefox/
firefox/run-mozilla.sh
firefox/libfreebl3.chk
firefox/extensions/
firefox/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}/
firefox/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}/preview.png
firefox/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}/install.rdf
firefox/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}/icon.png
firefox/extensions/testpilot@labs.mozilla.com/
firefox/extensions/testpilot@labs.mozilla.com/chrome.manifest
firefox/extensions/testpilot@labs.mozilla.com/instrument/
firefox/extensions/testpilot@labs.mozilla.com/instrument/chrome.manifest
firefox/extensions/testpilot@labs.mozilla.com/instrument/instrument.xul
firefox/extensions/testpilot@labs.mozilla.com/instrument/instrument.jsm
firefox/extensions/testpilot@labs.mozilla.com/instrument/install.rdf
firefox/extensions/testpilot@labs.mozilla.com/defaults/
firefox/extensions/testpilot@labs.mozilla.com/defaults/preferences/
firefox/extensions/testpilot@labs.mozilla.com/defaults/preferences/preferences.js
firefox/extensions/testpilot@labs.mozilla.com/skin/
firefox/extensions/testpilot@labs.mozilla.com/skin/mac/
firefox/extensions/testpilot@labs.mozilla.com/skin/mac/close_button.png
firefox/extensions/testpilot@labs.mozilla.com/skin/mac/notification-tail-down.png
firefox/extensions/testpilot@labs.mozilla.com/skin/mac/feedback.css
firefox/extensions/testpilot@labs.mozilla.com/skin/mac/feedback-smile-16x16.png
firefox/extensions/testpilot@labs.mozilla.com/skin/mac/feedback-frown-16x16.png
firefox/extensions/testpilot@labs.mozilla.com/skin/mac/notification-tail-up.png
firefox/extensions/testpilot@labs.mozilla.com/skin/win/
firefox/extensions/testpilot@labs.mozilla.com/skin/win/close_button.png
firefox/extensions/testpilot@labs.mozilla.com/skin/win/notification-tail-down.png
firefox/extensions/testpilot@labs.mozilla.com/skin/win/feedback.css
firefox/extensions/testpilot@labs.mozilla.com/skin/win/feedback-smile-16x16.png
firefox/extensions/testpilot@labs.mozilla.com/skin/win/feedback-frown-16x16.png
firefox/extensions/testpilot@labs.mozilla.com/skin/win/notification-tail-up.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/
firefox/extensions/testpilot@labs.mozilla.com/skin/all/testPilot_200x200.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/css/
firefox/extensions/testpilot@labs.mozilla.com/skin/all/css/screen-standalone.css
firefox/extensions/testpilot@labs.mozilla.com/skin/all/tp-results-48x48.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/tp-study-48x48.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/dino_32x32.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/tp-generic-32x32.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/testpilot_32x32.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/tp-submit-48x48.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/logo.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/tp-completedstudies-32x32.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/tp-currentstudies-32x32.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/badge-default.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/status-missed.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/bg.jpg
firefox/extensions/testpilot@labs.mozilla.com/skin/all/status-ejected.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/tp-settings-32x32.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/status-completed.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/images/
firefox/extensions/testpilot@labs.mozilla.com/skin/all/images/data1.jpg
firefox/extensions/testpilot@labs.mozilla.com/skin/all/images/bg-status.jpg
firefox/extensions/testpilot@labs.mozilla.com/skin/all/images/home_quit.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/images/home_comments.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/images/home_upcoming.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/images/home_results.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/images/home_computer.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/images/home_twitter.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/images/callout_continue.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/images/data2.jpg
firefox/extensions/testpilot@labs.mozilla.com/skin/all/images/home_continue.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/images/callout.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/testpilot_16x16.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/tp-learned-32x32.png
firefox/extensions/testpilot@labs.mozilla.com/skin/all/mozilla-logo.png
firefox/extensions/testpilot@labs.mozilla.com/skin/linux/
firefox/extensions/testpilot@labs.mozilla.com/skin/linux/close_button.png
firefox/extensions/testpilot@labs.mozilla.com/skin/linux/feedback.css
firefox/extensions/testpilot@labs.mozilla.com/skin/linux/feedback-smile-16x16.png
firefox/extensions/testpilot@labs.mozilla.com/skin/linux/feedback-frown-16x16.png
firefox/extensions/testpilot@labs.mozilla.com/tests/
firefox/extensions/testpilot@labs.mozilla.com/tests/test_data_store.js
firefox/extensions/testpilot@labs.mozilla.com/content/
firefox/extensions/testpilot@labs.mozilla.com/content/raw-data-dialog.xul
firefox/extensions/testpilot@labs.mozilla.com/content/experiment-page.js
firefox/extensions/testpilot@labs.mozilla.com/content/window-utils.js
firefox/extensions/testpilot@labs.mozilla.com/content/welcome.html
firefox/extensions/testpilot@labs.mozilla.com/content/survey-generator.js
firefox/extensions/testpilot@labs.mozilla.com/content/welcome-page.js
firefox/extensions/testpilot@labs.mozilla.com/content/tp-browser.xul
firefox/extensions/testpilot@labs.mozilla.com/content/all-studies-window.xul
firefox/extensions/testpilot@labs.mozilla.com/content/feedback-browser.xul
firefox/extensions/testpilot@labs.mozilla.com/content/raw-data-dialog.js
firefox/extensions/testpilot@labs.mozilla.com/content/flot/
firefox/extensions/testpilot@labs.mozilla.com/content/flot/jquery.colorhelpers.min.js
firefox/extensions/testpilot@labs.mozilla.com/content/flot/jquery.flot.image.min.js
firefox/extensions/testpilot@labs.mozilla.com/content/flot/jquery.flot.threshold.js
firefox/extensions/testpilot@labs.mozilla.com/content/flot/jquery.flot.stack.js
firefox/extensions/testpilot@labs.mozilla.com/content/flot/jquery.flot.image.js
firefox/extensions/testpilot@labs.mozilla.com/content/flot/jquery.flot.crosshair.js
firefox/extensions/testpilot@labs.mozilla.com/content/flot/jquery.min.js
firefox/extensions/testpilot@labs.mozilla.com/content/flot/jquery.js
firefox/extensions/testpilot@labs.mozilla.com/content/flot/jquery.colorhelpers.js
firefox/extensions/testpilot@labs.mozilla.com/content/flot/jquery.flot.crosshair.min.js
firefox/extensions/testpilot@labs.mozilla.com/content/flot/jquery.flot.stack.min.js
firefox/extensions/testpilot@labs.mozilla.com/content/flot/jquery.flot.navigate.js
firefox/extensions/testpilot@labs.mozilla.com/content/flot/jquery.flot.min.js
firefox/extensions/testpilot@labs.mozilla.com/content/flot/jquery.flot.selection.js
firefox/extensions/testpilot@labs.mozilla.com/content/flot/jquery.flot.js
firefox/extensions/testpilot@labs.mozilla.com/content/flot/jquery.flot.selection.min.js
firefox/extensions/testpilot@labs.mozilla.com/content/flot/jquery.flot.threshold.min.js
firefox/extensions/testpilot@labs.mozilla.com/content/flot/jquery.flot.navigate.min.js
firefox/extensions/testpilot@labs.mozilla.com/content/take-survey.html
firefox/extensions/testpilot@labs.mozilla.com/content/screen.css
firefox/extensions/testpilot@labs.mozilla.com/content/browser.js
firefox/extensions/testpilot@labs.mozilla.com/content/status-quit.html
firefox/extensions/testpilot@labs.mozilla.com/content/browser.css
firefox/extensions/testpilot@labs.mozilla.com/content/status.html
firefox/extensions/testpilot@labs.mozilla.com/content/all-studies-window.js
firefox/extensions/testpilot@labs.mozilla.com/content/debug.html
firefox/extensions/testpilot@labs.mozilla.com/modules/
firefox/extensions/testpilot@labs.mozilla.com/modules/extension-update.js
firefox/extensions/testpilot@labs.mozilla.com/modules/dbutils.js
firefox/extensions/testpilot@labs.mozilla.com/modules/string_sanitizer.js
firefox/extensions/testpilot@labs.mozilla.com/modules/log4moz.js
firefox/extensions/testpilot@labs.mozilla.com/modules/lib/
firefox/extensions/testpilot@labs.mozilla.com/modules/lib/timer.js
firefox/extensions/testpilot@labs.mozilla.com/modules/lib/securable-module.js
firefox/extensions/testpilot@labs.mozilla.com/modules/lib/preferences-service.js
firefox/extensions/testpilot@labs.mozilla.com/modules/lib/cuddlefish.js
firefox/extensions/testpilot@labs.mozilla.com/modules/lib/observer-service.js
firefox/extensions/testpilot@labs.mozilla.com/modules/lib/url.js
firefox/extensions/testpilot@labs.mozilla.com/modules/lib/traceback.js
firefox/extensions/testpilot@labs.mozilla.com/modules/lib/unit-test.js
firefox/extensions/testpilot@labs.mozilla.com/modules/lib/unload.js
firefox/extensions/testpilot@labs.mozilla.com/modules/lib/memory.js
firefox/extensions/testpilot@labs.mozilla.com/modules/lib/plain-text-console.js
firefox/extensions/testpilot@labs.mozilla.com/modules/experiment_data_store.js
firefox/extensions/testpilot@labs.mozilla.com/modules/Observers.js
firefox/extensions/testpilot@labs.mozilla.com/modules/metadata.js
firefox/extensions/testpilot@labs.mozilla.com/modules/setup.js
firefox/extensions/testpilot@labs.mozilla.com/modules/jar-code-store.js
firefox/extensions/testpilot@labs.mozilla.com/modules/tasks.js
firefox/extensions/testpilot@labs.mozilla.com/modules/remote-experiment-loader.js
firefox/extensions/testpilot@labs.mozilla.com/modules/feedback.js
firefox/extensions/testpilot@labs.mozilla.com/components/
firefox/extensions/testpilot@labs.mozilla.com/components/TestPilot.js
firefox/extensions/testpilot@labs.mozilla.com/install.rdf
firefox/updater
firefox/update.locale
firefox/icons/
firefox/icons/updater.png
firefox/icons/document.png
firefox/icons/mozicon128.png
firefox/libnss3.so
firefox/libsoftokn3.chk
firefox/libssl3.so
firefox/libsoftokn3.so
firefox/searchplugins/
firefox/searchplugins/eBay-france.xml
firefox/searchplugins/cnrtl-tlfi-fr.xml
firefox/searchplugins/google.xml
firefox/searchplugins/wikipedia-fr.xml
firefox/searchplugins/yahoo-france.xml
firefox/searchplugins/amazon-france.xml
firefox/dependentlibs.list
firefox/Throbber-small.gif
firefox/plugin-container
firefox/libxpcom.so
firefox/README.txt
firefox/defaults/
firefox/defaults/pref/
firefox/defaults/pref/channel-prefs.js
firefox/defaults/pref/firefox-l10n.js
firefox/defaults/pref/firefox-branding.js
firefox/defaults/pref/reporter.js
firefox/defaults/pref/firefox.js
firefox/defaults/autoconfig/
firefox/defaults/autoconfig/prefcalls.js
firefox/defaults/autoconfig/platform.js
firefox/defaults/profile/
firefox/defaults/profile/mimeTypes.rdf
firefox/defaults/profile/bookmarks.html
firefox/defaults/profile/localstore.rdf
firefox/defaults/profile/chrome/
firefox/defaults/profile/chrome/userChrome-example.css
firefox/defaults/profile/chrome/userContent-example.css
firefox/removed-files
firefox/blocklist.xml
firefox/crashreporter
firefox/crashreporter.ini
firefox/dictionaries/
firefox/dictionaries/fr.aff
firefox/dictionaries/fr.dic
firefox/firefox-bin
firefox/libnssutil3.so
firefox/platform.ini
firefox/libxul.so
firefox/libmozsqlite3.so
firefox/libmozalloc.so
firefox/libfreebl3.so
firefox/updater.ini
firefox/crashreporter-override.ini
firefox/libnspr4.so
firefox/chrome/
firefox/chrome/icons/
firefox/chrome/icons/default/
firefox/chrome/icons/default/default48.png
firefox/chrome/icons/default/default32.png
firefox/chrome/icons/default/default16.png
firefox/chrome/browser.manifest
firefox/chrome/pippki.manifest
firefox/chrome/fr.manifest
firefox/chrome/fr.jar
firefox/chrome/pippki.jar
firefox/chrome/browser.jar
firefox/chrome/toolkit.jar
firefox/chrome/toolkit.manifest
firefox/modules/
firefox/modules/XPIProvider.jsm
firefox/modules/DownloadPaths.jsm
firefox/modules/LightweightThemeConsumer.jsm
firefox/modules/AddonManager.jsm
firefox/modules/SpatialNavigation.js
firefox/modules/NetworkPrioritizer.jsm
firefox/modules/PlacesDBUtils.jsm
firefox/modules/ISO8601DateUtils.jsm
firefox/modules/Microformats.js
firefox/modules/PlacesUIUtils.jsm
firefox/modules/PopupNotifications.jsm
firefox/modules/AddonUpdateChecker.jsm
firefox/modules/HUDService.jsm
firefox/modules/AddonRepository.jsm
firefox/modules/debug.js
firefox/modules/distribution.js
firefox/modules/stylePanel.jsm
firefox/modules/ctypes.jsm
firefox/modules/PlacesUtils.jsm
firefox/modules/Services.jsm
firefox/modules/FileUtils.jsm
firefox/modules/InlineSpellChecker.jsm
firefox/modules/CertUtils.jsm
firefox/modules/openLocationLastURL.jsm
firefox/modules/LightweightThemeManager.jsm
firefox/modules/utils.js
firefox/modules/PerfMeasurement.jsm
firefox/modules/DownloadLastDir.jsm
firefox/modules/AddonLogging.jsm
firefox/modules/DownloadUtils.jsm
firefox/modules/CrashSubmit.jsm
firefox/modules/XPCOMUtils.jsm
firefox/modules/CSPUtils.jsm
firefox/modules/NetUtil.jsm
firefox/modules/PluralForm.jsm
firefox/modules/WindowDraggingUtils.jsm
firefox/modules/PluginProvider.jsm
firefox/greprefs.js
firefox/libplc4.so
firefox/libnssckbi.so
firefox/application.ini
firefox/libsmime3.so
firefox/components/
firefox/components/nsUpdateTimerManager.js
firefox/components/nsFormAutoComplete.js
firefox/components/nsPlacesAutoComplete.js
firefox/components/nsPlacesExpiration.js
firefox/components/nsUrlClassifierLib.js
firefox/components/libmozgnome.so
firefox/components/nsSidebar.js
firefox/components/contentAreaDropListener.js
firefox/components/nsContentDispatchChooser.js
firefox/components/GPSDGeolocationProvider.js
firefox/components/nsSearchSuggestions.js
firefox/components/nsLoginManagerPrompter.js
firefox/components/nsWebHandlerApp.js
firefox/components/nsSessionStore.js
firefox/components/nsPlacesDBFlush.js
firefox/components/browser.manifest
firefox/components/PlacesProtocolHandler.js
firefox/components/WebContentConverter.js
firefox/components/nsPrompter.js
firefox/components/libbrowsercomps.so
firefox/components/nsSearchService.js
firefox/components/nsINIProcessor.js
firefox/components/NetworkGeolocationProvider.js
firefox/components/nsURLFormatter.js
firefox/components/nsBlocklistService.js
firefox/components/nsDefaultCLH.js
firefox/components/jsconsole-clhandler.js
firefox/components/nsContentPrefService.js
firefox/components/browser.xpt
firefox/components/amWebInstallListener.js
firefox/components/nsTaggingService.js
firefox/components/amContentHandler.js
firefox/components/nsUpdateService.js
firefox/components/nsLoginManager.js
firefox/components/libdbusservice.so
firefox/components/nsBrowserContentHandler.js
firefox/components/FeedWriter.js
firefox/components/nsMicrosummaryService.js
firefox/components/nsPrivateBrowsingService.js
firefox/components/nsTryToClose.js
firefox/components/nsHandlerService.js
firefox/components/nsFilePicker.js
firefox/components/FeedConverter.js
firefox/components/FeedProcessor.js
firefox/components/nsSafebrowsingApplication.js
firefox/components/nsUpdateServiceStub.js
firefox/components/nsLivemarkService.js
firefox/components/nsSetDefaultBrowser.js
firefox/components/nsFormHistory.js
firefox/components/nsLoginInfo.js
firefox/components/storage-Legacy.js
firefox/components/storage-mozStorage.js
firefox/components/fuelApplication.js
firefox/components/addonManager.js
firefox/components/contentSecurityPolicy.js
firefox/components/nsBrowserGlue.js
firefox/components/nsProxyAutoConfig.js
firefox/components/nsSessionStartup.js
firefox/components/crypto-SDR.js
firefox/components/nsUrlClassifierListManager.js
firefox/components/txEXSLTRegExFunctions.js
firefox/components/nsDownloadManagerUI.js
firefox/components/libnkgnomevfs.so
firefox/components/nsHelperAppDlg.js
firefox/components/nsBadCertHandler.js
firefox/firefox
firefox/libplds4.so
firefox/res/
firefox/res/table-remove-column-hover.gif
firefox/res/html/
firefox/res/html/folder.png
firefox/res/table-add-column-after.gif
firefox/res/table-add-row-after-hover.gif
firefox/res/svg.css
firefox/res/table-add-row-before-hover.gif
firefox/res/langGroups.properties
firefox/res/fonts/
firefox/res/fonts/mathfontSTIXNonUnicode.properties
firefox/res/fonts/mathfontSTIXSize1.properties
firefox/res/fonts/mathfontUnicode.properties
firefox/res/fonts/mathfontStandardSymbolsL.properties
firefox/res/fonts/mathfontSTIXSizeOneSym.properties
firefox/res/fonts/mathfont.properties
firefox/res/table-remove-row-hover.gif
firefox/res/entityTables/
firefox/res/entityTables/htmlEntityVersions.properties
firefox/res/entityTables/mathml20.properties
firefox/res/entityTables/html40Special.properties
firefox/res/entityTables/html40Symbols.properties
firefox/res/entityTables/transliterate.properties
firefox/res/entityTables/html40Latin1.properties
firefox/res/table-remove-column-active.gif
firefox/res/table-add-row-after-active.gif
firefox/res/table-add-column-after-hover.gif
firefox/res/table-remove-column.gif
firefox/res/table-add-column-before.gif
firefox/res/grabber.gif
firefox/res/table-remove-row-active.gif
firefox/res/table-add-column-before-active.gif
firefox/res/dtd/
firefox/res/dtd/mathml.dtd
firefox/res/dtd/xhtml11.dtd
firefox/res/table-add-row-after.gif
firefox/res/table-add-row-before.gif
firefox/res/table-add-row-before-active.gif
firefox/res/designmode.css
firefox/res/contenteditable.css
firefox/res/language.properties
firefox/res/EditorOverride.css
firefox/res/table-remove-row.gif
firefox/res/table-add-column-after-active.gif
firefox/res/table-add-column-before-hover.gif
firefox/mozilla-xremote-client
firefox/libnssdbm3.chk
firefox/libnssdbm3.so
firefox/libmozjs.so
pat@vegas:~/Téléchargements$  mkdir ~/.mozilla/plugins
mkdir: impossible de créer le répertoire «/home/pat/.mozilla/plugins»: Le fichier existe
pat@vegas:~/Téléchargements$
  c'est cp libmozjs.so  ~/.mozilla/plugins/ .
Pour /opt je ne sais pas