Because you have set it only for the active shell. If you'd exported it, you would have it in every subshell started from the current one.
To have it in other sessions, you will have to edit your environment files like ~/.profile or your shell specific file like ~/.kshrc or ~/.bashrc and also source them or relogin.
If you have an already existing PATH set somewhere and want to add something, use
so that the existing path will not be overwritten but expanded by the new entry.
HI there people!!
I'm really new with this great OS. I just installed a RedHat Linux 7.1 on my unit. Got it to work on dual boot with my Windows 2000. And I have some problem... how do i change/modify the system environment path? Thanks... and sorry for the ignorance ;) (5 Replies)
Hi,
How does the PATH and MANPATH environment variable get set?
I want to add "/opt/SUNWspro/bin" to the search path for all the users. Where can I access this variable.
I know in my home directory, depend on which shell I use, there are files such as .profile and .cshrc which I can edit to... (3 Replies)
Hi.....
I'm kind of new to c programming in Unix...need help here.
Supposed to write a source code to support Path environment variable for my programming assignment for Spring semester.
but i'm kind of stuck. Could anyone out there assist me?
prompt> /bin/ls
My program could output... (3 Replies)
whats the meaning of ::
colon in PATH environment?
/usr/local/bin:/usr/bin:/usr/local/gnu/bin::.:/usr/local/bin:/usr/bin:/usr/local/gnu/bin:/usr/local/bin
and whats the meaning of // in PATH ? (1 Reply)
hi all
i have joined new to the group.
i have set an variable in my bashrc file.
.bashrc
PROGHOME=/home/braf/braf/prog
export PROGHOME
but while using it in my shell script its path is not taken and i had to explicitly give the export command to set the path.
in my script... (8 Replies)
Hello,
I am using Solaris 10.0 and defining PATH on command line by the following way:
#export PATH=/usr/sfw/bin....
...but after restart, Solaris forgets what I defined and I need to re-define the same PATH environment.
I want to to get defined my PATH environment during booting... (10 Replies)
Hi
I need a script which will remove a path from PATH environment variable. For example
$echo PATH
/usr/local/bin:/usr/bin:test/rmve:/usr/games
$echo rmv
test/rmve
Here I need a shell script which will remove rmv path (test/rmve) from PATH... (9 Replies)
I'm trying to make a sed substitution where the substitution pattern is an environment variable to be expanded, but the variable contains a "slash".
sed -e 's/<HOME_DIRECTORY>/'$HOME'/'This gives me the following error:
sed: -e expression #1, char 21: unknown option to `s'Obviously this is... (2 Replies)
Hello all, I have a Mac OS X (10.7), and I need to set environment variables and paths for some programs I will be running. I have followed instructions and searched the Web for where to do this, but I can't seem to find an answer. I have tried using the VIM editor to write them into my .login,... (2 Replies)
Discussion started by: Tyler_92
2 Replies
LEARN ABOUT OSX
env
Env(3pm) Perl Programmers Reference Guide Env(3pm)NAME
Env - perl module that imports environment variables as scalars or arrays
SYNOPSIS
use Env;
use Env qw(PATH HOME TERM);
use Env qw($SHELL @LD_LIBRARY_PATH);
DESCRIPTION
Perl maintains environment variables in a special hash named %ENV. For when this access method is inconvenient, the Perl module "Env"
allows environment variables to be treated as scalar or array variables.
The "Env::import()" function ties environment variables with suitable names to global Perl variables with the same names. By default it
ties all existing environment variables ("keys %ENV") to scalars. If the "import" function receives arguments, it takes them to be a list
of variables to tie; it's okay if they don't yet exist. The scalar type prefix '$' is inferred for any element of this list not prefixed by
'$' or '@'. Arrays are implemented in terms of "split" and "join", using $Config::Config{path_sep} as the delimiter.
After an environment variable is tied, merely use it like a normal variable. You may access its value
@path = split(/:/, $PATH);
print join("
", @LD_LIBRARY_PATH), "
";
or modify it
$PATH .= ":.";
push @LD_LIBRARY_PATH, $dir;
however you'd like. Bear in mind, however, that each access to a tied array variable requires splitting the environment variable's string
anew.
The code:
use Env qw(@PATH);
push @PATH, '.';
is equivalent to:
use Env qw(PATH);
$PATH .= ":.";
except that if $ENV{PATH} started out empty, the second approach leaves it with the (odd) value "":."", but the first approach leaves it
with ""."".
To remove a tied environment variable from the environment, assign it the undefined value
undef $PATH;
undef @LD_LIBRARY_PATH;
LIMITATIONS
On VMS systems, arrays tied to environment variables are read-only. Attempting to change anything will cause a warning.
AUTHOR
Chip Salzenberg <chip@fin.uucp> and Gregor N. Purdy <gregor@focusresearch.com>
perl v5.16.2 2012-10-11 Env(3pm)