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Old 07-29-2004, 04:09 PM   #1
nodnarb
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Question Viewing the"Library Path"


Does anyone know how to view and modify your library path?
 
Old 07-29-2004, 04:24 PM   #2
Vookimedlo
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view it by:
cat /etc/ld.so.conf

after changes invoke:
/sbin/ldconfig



sometimes this path is in LD_LIBRARY variable
 
Old 07-29-2004, 04:26 PM   #3
linuxlastslonge
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when you say `view`, do you mean list the directories in your path, or simply list the files in /lib ?





 
Old 07-29-2004, 04:29 PM   #4
Corona4456
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Well that depends on what PATH you want to set. If you know the name of your variable then figure out what shell you are running (ksh, csh, bash... etc). If you don't know that then type 'echo $SHELL' and that should output the default shell that is used (more than likely bash). If it's bash... then you do the following, however, remember to replace PATH with the environment variable you intend on modifying:

export PATH=$PATH:/new/path/added/ <enter>

And that should work... to check type echo $PATH and see if your path has been added.

If you have a csh shell then you can do the following:

setenv PATH=$PATH:/new/path/added/ <enter>

Now these paths won't be permanent... if you want to do this permanently then put these lines your .cshrc or .bashrc files.

Last edited by Corona4456; 07-29-2004 at 04:32 PM.
 
Old 07-29-2004, 04:54 PM   #5
nodnarb
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I mean how do you add a path (like for your PATH environment, its export PATH= $PATH/dir/).
 
Old 11-23-2004, 02:51 PM   #6
boydasilva
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I've got a similar problem, I can't get the path changes to save, and I don't have a .tschrc file, only .bashrc and .bash_profile. I'm quite sure that I'm running tcsh, cos when I type echo $SHELL, it returns /bin/tcsh.

How can I add path changes to .tschrc if I don't have one?
 
Old 11-23-2004, 04:02 PM   #7
foo_bar_foo
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u o
stolen thread

Quote:
Originally posted by boydasilva
I'm quite sure that I'm running tcsh, cos when I type echo $SHELL, it returns /bin/tcsh.
How can I add path changes to .tschrc if I don't have one?
make one.
emacs ~/.tschrc
or change to bash
edit /etc/passwd
make for your username like
username:x:<number>:<number>::/home/username:/bin/bash

Quote:
I mean how do you add a path (like for your PATH environment, its export PATH= $PATH/dir/).
better to add the lib path to /etc/ld.so.conf
and as root run ldconfig
that to set the lib path variable

LD_LIBRARY_PATH
for runtime lib path

is usefull but an older and slower way of doing it
ld.so.conf is compiled and cached (faster and smarter)
developers use LD_LIBRARY_PATH mostly for temporary changes for testing

Last edited by foo_bar_foo; 11-23-2004 at 04:03 PM.
 
Old 11-24-2004, 02:45 PM   #8
boydasilva
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Editing .tcshrc file

I don't seem to be able to make this work. I've made a .tcshrc file, which looks a bit like this:
################################################################
# .tcshrc

# User specific aliases and functions

alias rm 'rm -i'
alias cp 'cp -i'
alias mv 'mv -i'

# Source global definitions
if [ -f /etc/tcshrc ]; then
. /etc/tcshrc
fi

################################################################

Now when I open a shell, i get this message:

if: Expression Syntax.

What's wrong with my if statement? Have I missed something out?

Also, I need to add these statements to the .tcshrc in order to get a program to run:
setenv LD_LIBRARY_PATH $HOME/EMAN/lib
set path = (. $HOME/EMAN/bin $HOME/bin /bin)

But when I add these to the .tcshrc nothing changes. What exactly am I doing wrong?


EDIT:
Should have posted this as a new thread. Sorry!

Last edited by boydasilva; 11-24-2004 at 02:47 PM.
 
  


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