03-16-2011
Find out the System users
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1. The problem statement, all variables and given/known data:
I want to create a file called Allusers that contains the list of
currently logged on users and the total number of them.
(note: it should print, The Total is: , at the end of the Allusers file)
I have made the command, and when i perform it , it show me all the users and it print the total of them. But my problem that the command doesn't save the result in the Allusers file.
2. Relevant commands, code, scripts, algorithms:
who
sort
tee
cat
echo
cat
wc
3. The attempts at a solution (include all code and scripts):
who | sort -t: -k1 | tee All |cat; echo Total; cat All |wc -l; rm All > Allusers
4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
University of Newengland, Armidale, NSW, Australia
Dr.Paul Kwan, COMP170.
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LEARN ABOUT OPENDARWIN
size
SIZE(1) General Commands Manual SIZE(1)
NAME
size - print the size of the sections in an object file
SYNOPSIS
size [ option ... ] [ object ... ]
DESCRIPTION
Size (without the -m option) prints the (decimal) number of bytes required by the __TEXT, __DATA and __OBJC segments. All other segments
are totaled and that size is listed in the `others' column. The final two columns is the sum in decimal and hexadecimal. If no file is
specified, a.out is used.
The options to size(1) are:
- Treat the remaining arguments as name of object files not options to size(1).
-m Print the sizes of the Mach-O segments and sections as well as the total sizes of the sections in each segment and the total size of
the segments in the file.
-l When used with the -m option, also print the addresses and offsets of the sections and segments.
-x When used with the -m option, print the values in hexadecimal (with leading 0x's) rather than decimal.
-arch arch_type
Specifies the architecture, arch_type, of the file for size(1) to operate on when the file is a fat file. (See arch(3) for the cur-
rently know arch_types.) The arch_type can be "all" to operate on all architectures in the file. The default is to display only
the host architecture, if the file contains it; otherwise, all architectures in the file are shown.
SEE ALSO
otool(1)
BUGS
The size of common symbols can't be reflected in any of the numbers for relocatable object files.
Apple Computer, Inc. May 23, 2002 SIZE(1)