I faced similar issue while i was developing tools for navigating to different directories, I wrote script to change user CWD to desired one (from the inputs provided) but as script used to run in sub-shell it used to bring user back to original directory!!
To avoid that i created functions, here is sample code .. (writing directly here..)
by creating function, you can avoid writing ". /" or "source", good from user point of view... also function allows sending arguments. If there are no arguments just use alias!
Hi!
How-to get the environment variables in GNU.
getenv() only fetches the ones that you can find under export (not the ones under declare)...
best regars .David (2 Replies)
hi,
1). i would like to know what is meant by environment variables?
2). is the number of envi variables is a constant number for unix systems?
3). how to see the list of envi variables (and the values of the envi variables)in a single command?
4). if this questions were already asked... (3 Replies)
hi,
I want to create a new EV(Environment Variable) through a c program and I done this thing through setenv() method. But the newly created EV is not permanent, i.e. when I exit from the program the EV also no longer lives. But I want to make it a permanent EV for the current user. Actually I... (6 Replies)
Hi Experts,
Need your help in understanding the commands to setup the environment variables in hp-ux.
Beleive need to use either set,setenv or export.
I am confused between above three options, when to use which option?
On command line, I have tried both set and setenv but couldn't... (1 Reply)
1. The problem statement:
What is the mesg value set for your environment? If it is on, how would you turn off your current
session? How would you set it permanently?
3. The attempts at a solution :
Read Unix The textbook.
3rd chapter has many things like environment variables and... (5 Replies)
Hi All,
I need to understand following three environment variables and their usages in HP Unix.
_M_ARENA_OPTS
_M_CACHE_OPTS
PTHREAD_SCOPE_SYSTEM
How does these environment variables influence multi threaded applciation and how do we decide the value of these variables? Is there... (0 Replies)
Discussion started by: angshuman
0 Replies
LEARN ABOUT SUNOS
use
USE(1) User Commands USE(1)NAME
use - Frontend to the Usepackage Environment Manager
SYNOPSIS
csh and derivatives:
source /usr/share/usepackage/use.csh
bourne shell and derivatives:
source /usr/share/usepackage/use.bsh
korn shell:
. /usr/share/usepackage/use.ksh
use [-vs] [-f file] package ...
use -l
DESCRIPTION
Usepackage is an environment management program. It is based on the principle of packages - collections of executables that share a common
set of necessary environment variables, such as PATH, MANPATH or LD_LIBRARY_PATH.
For each given package, use sources the appropriate environment information into the current shell. The environment information is speci-
fied in a configuration file, see usepackage(1).
OPTIONS
-v Output verbose information to the standard error stream.
-s Silence warnings for un-matched packages. This is useful in a shell rc script when a package is known not to be available on all
architectures that the shell is used on.
-f file
Specify an alternate initial configuration file.
-l List available packages and groups.
FILES
/usr/share/usepackage/usepackage.conf
The default configuration file.
/usr/share/usepackage/use.csh
Shell setup for csh and derivatives.
/usr/share/usepackage/use.bsh
Shell setup for bourne shell and derivatives.
/usr/share/usepackage/use.ksh
Shell setup for ksh.
/usr/bin/usepackage
The underlying Usepackage executable.
ENVIRONMENT
Other than the reading and re-definition of environment variables for package setup, use also uses the following environment variables for
user configuration:
PACKAGES_PATH Colon-separated path list giving the directories to search for configuration files. Shell-style tilde (~) user-directory
escapes are expanded.
HOME If present in the environment, this is used to provide the expansion for the tilde (~) user-directory.
SHELL If present in the environment, the last path component of this is used for shell matching (see SYNTAX) and detecting the
style of environment output that should be used, see usepackage(1).
COPYRIGHT
Usepackage Environment Manager
Copyright (C) 1995-2005 Jonathan Hogg
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MER-
CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
SEE ALSO usepackage(1), csh(1), sh(1), ksh(1)Usepackage $Date: 2005/12/11 16:42:09 $ USE(1)