topic Re: variable in Operating System - Linux

variable

Chakravarthi — Mon, 02 Dec 2002 12:34:11 GMT

Hi all,

How do i export a variable with read permissions

regards
chakri

Re: variable

John Meissner — Mon, 02 Dec 2002 12:40:22 GMT

variables don't have permissions the same way a file does. When you export it you should be able to read that variable until you unset it. to set a variable in a script it is as simple as:

variable=value

to recall that variable in the script you could:

echo $variable

do you need to export the variable so that it can be used outside of a script? If so then you just have to follow my first example at the command line.

if you need to export a variable such as your DISPLAY just type:

export DISPLAY=workstation:0.0

Is any of this what you are looking for?

Re: variable

Chakravarthi — Mon, 02 Dec 2002 12:51:13 GMT

other than export in linux there is a command with which you can export a variable with permissions,, looking for that command

thx
chakri

Re: variable

Tom Maloy — Mon, 02 Dec 2002 13:55:51 GMT

Export is used in sh and ksh. I believe that "set" is used in csh. Are you trying to export in a specific shell?

Re: variable

Steven Mertens — Mon, 02 Dec 2002 17:35:56 GMT

hi,

You can do it with typeset ( with pdksh)

ex.

[ smertens@thalia:/home/smertens ] [ 20021202 18:33:58 ]
$ typeset -r y=bla
[ smertens@thalia:/home/smertens ] [ 20021202 18:34:40 ]
$ y=blabla
ksh: y: is read only

hope this helps.

Steven

Re: variable

Steven Mertens — Sat, 14 Dec 2002 21:02:09 GMT

hi

I just found out you can also
use the command readonly
to set vars readonly. :)

rgds.

Steven