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Full Discussion: BASH Environment Variables as arguments?
Homework and Emergencies Homework & Coursework Questions BASH Environment Variables as arguments? Post 302394382 by vbe on Thursday 11th of February 2010 09:03:15 AM
Old 02-11-2010
You have it all in the problem statement: Think well...
Quote:
myenv PRINTER
should print a line such as: PRINTER=kc3500
e.g., myenv HOME PRINTER
should print a line such as: HOME=/home/dwoit
From the examples you must take in account only the 1rst given argument.
But this argument is also a variable, no?
So how will you print out the $1 if you dont store it in a variable ( call it DISPL_ENV) to display?
Why look for complicated syntax for something dead simple if you take the time to read what you are asked.
If you need more just post, but I do hope you find the solution by yourself now
 

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LEARN ABOUT NETBSD

lp

LP(1)							    BSD General Commands Manual 						     LP(1)

NAME

     lp -- front-end to the print spooler

SYNOPSIS

     lp [-cs] [-o option] [-d printer] [-n num] [file ...]

DESCRIPTION

     lp is a front-end to the print spooler as required by the IEEE Std 1003.2 (``POSIX.2'') specification.  It effectively invokes lpr(1) with
     the proper set of arguments.  It generally prints the named files on the destination printer.

     The following options are available:

     -c      Make the lp command exit only after further access to any of the input files is no longer required.  The application can then safely
	     delete or modify the files without affecting the output operation.

     -d dest
	     Specify a particular printer.  If no -d is provided on the command line, the contents of the environment variables LPDEST or PRINTER
	     (with this precedence) are taken as the destination printer.

     -n num  Specify that num copies of each of the named files shall be printed.

     -s      Silent operation.

     -o      Printer specific options.	Not supported, provided only as a compatibility option for SVR4.

ENVIRONMENT

     As described above, the variables LPDEST and PRINTER are examined to select the destination printer.

SEE ALSO

     lpr(1)

STANDARDS

     The lp command is expected to comply with the IEEE Std 1003.2 (``POSIX.2'') specification.

AUTHORS

     This implementation of the lp command has been written by Jorg Wunsch.

BUGS

     The IEEE Std 1003.2 (``POSIX.2'') specification does not provide any means to print non-text files.  It rather requires the files to be
     printed to be text files limited to reasonable line lengths and printable characters.

BSD
								 January 22, 1995							       BSD
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