TYPO3 Core

The Install Tool requires to make an entry into the field systemLocale. However there is not example how to do it. The link to the PHP page is hard to understand. The text should be enhanced with a working example what to enter here. The LINUX variable should be mentioned here.
LC_CTYPE=fr_FR.UTF-8

[SYS][systemLocale]
String: locale used for certain system related functions, e.g. escaping shell commands. If problems with filenames containing special characters occur, the value of this option is probably wrong.

See http://forum.typo3.org/index.php/t/203671/

This is the error message in the Install Tool:

System locale not set on UTF-8 file system
$GLOBALS[TYPO3_CONF_VARS][SYS][UTF8filesystem] is set, but $GLOBALS[TYPO3_CONF_VARS][SYS][systemLocale] is empty. Make sure a valid locale which supports UTF-8 is set.