<font size="3">Funkcje
A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z
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<font size="4">U</span>
Nazwa</th>Opis</th></tr>
uc</td>return upper-case version of a string</td></tr>
ucfirst</td>return a string with just the next letter in upper case</td></tr>
umask</td>set file creation mode mask</td></tr>
undef</td>remove a variable or function definition</td></tr>
unlink</td>remove one link to a file</td></tr>
unpack</td>convert binary structure into normal perl variables</td></tr>
unshift</td>prepend more elements to the beginning of a list</td></tr>
untie</td>break a tie binding to a variable</td></tr>
use</td>load in a module at compile time</td></tr>
utime</td>set a file's last access and modify times</td></tr>
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