perl: warning: Please check that your locale settings: LANGUAGE = "en_US:en", LC_ALL = (unset), LC_MESSAGES = "en_US. locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory (Reading database ... locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory $ locale LANG=C LANGUAGE= LC_CTYPE=fi_FI. The outputs for locale and other commands appeared like the variables were properly defined.
perl: warning: Falling back to the standard locale ("C"). UTF-8 LC_PAPER="C" LC_NAME="C" LC_ADDRESS="C" LC_TELEPHONE="C" LC_MEASUREMENT="C" LC_IDENTIFICATION="C" LC_ALL= For some reason it was missing.
Now some updates may require either you to log out of your desktop and log back in, or to reboot the machine.
There are is a new tool in development (Ksplice)  that allow even the update of a kernel to not require a reboot.
21173 files and directories currently installed.) Removing bind9 ... In other words don't take for granted all the basic stuff is declared where it should be declared.
[email protected]:~ $ sudo a2enmod rewrite && a2enmod headers && a2enmod ssl Module rewrite already enabled Module headers already enabled Considering dependency setenvif for ssl: Module setenvif already enabled Considering dependency mime for ssl: Module mime already enabled Considering dependency socache_shmcb for ssl: Module socache_shmcb already enabled Module ssl already enabled Thank you for your interest in this question.
Pass it the names of a package or packages to reconfigure.
It will ask configuration questions, much like when the package was first installed. The above answers are useful but setting the locale variables by simply exporting the values in shell variable will work only for a session.
As stated earlier, this is done with the help of the Your Fedora system is now up to date.
Granted only two distributions were touched on here, but this should illustrate how easily a Linux installation is updated.