Nemôžem zobraziť dokumentáciu gpio po zadani "man gpio" príkazu

[dorinand]

Ahoj,

pri zadaní "man gpio" dostanem hlášku :

Kód: [Vybrat]

man: can't set the locale; make sure $LC_* and $LANG are correct
No manual entry for gpio
See 'man 7 undocumented' for help when manual pages are not available.
Viete mi vysvetliť prečo mi nejde zobraziť dokumentáciu ku gpio? Po zadaní príkazu locale dostanem nasledovný výpis:

> locale
locale: Cannot set LC_ALL to default locale: No such file or directory
LANG=en_GB.UTF-8
LANGUAGE=
LC_CTYPE="en_GB.UTF-8"
LC_NUMERIC=cs_CZ.UTF-8
LC_TIME=cs_CZ.UTF-8
LC_COLLATE="en_GB.UTF-8"
LC_MONETARY=cs_CZ.UTF-8
LC_MESSAGES="en_GB.UTF-8"
LC_PAPER=cs_CZ.UTF-8
LC_NAME=cs_CZ.UTF-8
LC_ADDRESS=cs_CZ.UTF-8
LC_TELEPHONE=cs_CZ.UTF-8
LC_MEASUREMENT=cs_CZ.UTF-8
LC_IDENTIFICATION=cs_CZ.UTF-8
LC_ALL=

[Cuore]

mrkni sem
http://raspberrypi.stackexchange.com/questions/51346/cannot-display-gpio-documentation-over-man-gpio-command