The asterisk symbol means 0 to many repetitions of the expression it follows. This means the regular expression "do*g" would match "dg", "dog", "doog", "dooog", ... or "(?>do)*g" would match "g", "dog", "dodog", "dododog", ...
a period means 'any single character'. A period followed by an asterisk means 'zero or more characters'.
Try asterisk.
Single-letter matching wild cards. Example: d?g could be dog, dig, or dug, but NOT dang, dragging, drug, dung, or digging.
It would depend on the context. It is usually used as a wildcard, or a pattern that will match everything.
The @ symbol.
fghj
The penguin symbol is used for the Linux operating system
The # symbol.
Yes, as long as they have user accounts on both machines.
Linux is not a single product from a single company. Several companies produce Linux distros. Novell (on NASDAQ) - NOVL Red Hat (on NYSE) - RHT Xandros - not publicly traded Canonical - not publicly traded
The interpretation of the asterisk depends on the exact filter language and dialect in use.For example, the Windows console supports an asterisk as a placeholder for any alphanumerical character which can be part of a file base name, that is, letters, digits, underscore, and some others, but other characters with special meaning in this context, such as a period, a colon or a backslash. For example - the instruction Dir *.txt would list every file with the extension txt.Commonly used equivalents console applications under the Unix (Linux) family of operating systems (so-called 'shell' programs such as BASH and many others) interpret the asterisk as a placeholder for any valid file name character (that is, including the period).In most regular expression dialects, the asterisk does not represent a particular character or group of characters at all. It is instead used to implement a multiplier, where the asterisk matches "zero or more times whichever search expression precedes the asterisk." Thus, 'AZ*' will be interpreted as "match a sequence consisting of letter A, followed by zero or more letters Z: 'A', 'AZ', 'AZZZZZ', etc.
Linux is the name of the popular Open Source operating system (OS). It's originator/creator, Linus Torvalds, is a programmer known thoughout the world as the creator of Linux. There are companies that focus on Linux OS (an example is RedHat Linux). The RedHat ticker symbol on the Nasdaq stock exchange in New York was RHAT before they were acquired by IBM a few years ago.