SPU
Glossary System Processing Unit. The
standard error
The destination of error and special messages from a program, in tended to be used for diagnostic messages. The standard error output is often called stderr , and is automatically opened b y the shell for writing on le descriptor 2 for ev ery command invoked. Standard error usually appears on the display unless it is directed otherwise.
standard input
The source of input data for a program. The standard input le is often called stdin, and is automatically opened b y the shell for reading on le descriptor 0 for ev ery command invoked.
standard output
The destination of output data from a program. The standard output le is often called stdout , and is automatically opened b y the shell for writing on le descriptor 1 for ev ery command invoked. Standard output appears on the display unless it is redirected otherwise.
SU
Super User. See root user.
system name
The
tree structure
The
uid
User ID.
FINAL TRIM SIZE : 7.0 in x 8.5 in