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Full Discussion: Problem in understanding export uses
Top Forums Shell Programming and Scripting Problem in understanding export uses Post 302668767 by PikK45 on Tuesday 10th of July 2012 02:45:50 AM
Old 07-10-2012
Your script has errors. Please see jlliagre's post for the corretion.

And after correction,

uname -n ===> Gives you the hostname of the system you are working on. So,
Code:
HOST:=`uname -n`

will contain that hostname.

Now,
Code:
PS1=$(HOST:=`uname -n`)"$ "

means, you are adding an additional symbol $ to the end of the hostname and storing it in the variable PS1

Did this help?
 

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LEARN ABOUT MOJAVE

uname

UNAME(3)						   BSD Library Functions Manual 						  UNAME(3)

NAME

     uname -- get system identification

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <sys/utsname.h>

     int
     uname(struct utsname *name);

DESCRIPTION

     The uname() function stores nul-terminated strings of information identifying the current system into the structure referenced by name.

     The utsname structure is defined in the <sys/utsname.h> header file, and contains the following members:

	   sysname	 Name of the operating system implementation.

	   nodename	 Network name of this machine.

	   release	 Release level of the operating system.

	   version	 Version level of the operating system.

	   machine	 Machine hardware platform.

RETURN VALUES

     The uname() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate
     the error.

ERRORS

     The uname() function may fail and set errno for any of the errors specified for the library functions sysctl(3).

SEE ALSO

     uname(1), sysctl(3)

STANDARDS

     The uname() function conforms to IEEE Std 1003.1-1988 (``POSIX.1'').

HISTORY

     The uname() function first appeared in 4.4BSD.

BSD
								  January 4, 1994							       BSD
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