It depends on the shell you are using, but a standard seems to be 1024 of the last commands.
There is no "default" Unix shell. Different Unix vendors shipped different shells.
No vaselating' what the default output device means is newtral...
The maximum size of a file in Unix depends on two things: the word size of the kernel, and the setting for LARGE_FILE support on the file system. For 32 bit system the maximum default would be about 2 gigabytes. For 64 bit systems or ones with LARGE_FILE support, the maximum would be approximately 264
The a default Unix shell is the shell that comes with and is activated initially with your distribution of Unix. The shell is essentially the program the runs the command line interface allowing someone to interact with their computer. Some examples are the Bourne-Again shell (bash) or the Bourne shell (sh).
CD /
Default font size is 12.
1" is the default margin size.
The default size of the ntds log files is dependent on the server version. In Windows 2000, the default size is 10 MB, while in Windows 2003 the default size is 12 MB.
.75 inches cubed.
The selection of 12 as a default font size approximates text size on a normal paper page in the default page configuration. You can adjust the default template to display any size font you like.
The size parameter reset the default buffer size but did not disable access to the buffer.
This question is hard to answer because there is no concept of a default shell. Most shell interpreters may be stored in /bin, or /usr/bin, or some combination of those.