Create Sys links to start up scripts RHEL 4

[gaf at blu.org (Jerry Feldman)]

I'm not sure what you mean by "sys links", but I assume you mean
"symbolic links" or "symlinks" for short.
The command is ln(1):
ln -s TARGET [LINK NAME]
For instance, assume there is a directory, /opt/matlab that contains
the the subdirectory etc and files lmboot and lmdown.
Also, let's assume that the $MATLAB environment variable is set
to /opt/matlab.
So, the commands you need to do (as root) are:
 ln -s $MATLAB/etc/lmboot /etc/lmboot_TMW
 ln -s  $MATLAB/etc/lmdown /etc/lmdown_TMW
These will create the symbolic links, lmboot_TMW and lmdown_TMW in
the /etc directory. 
If you do not have the $MATLAB environment variable set, then you can
simply issue the following 2 commands:
ln -s /opt/matlab/etc/lmboot /etc/lmboot_TMW
ln -s  /opt/matlab/etc/lmdown /etc/lmdown_TMW

Just another explanation:
In this case the /etc/init.d/flexnet script is run during
initialization of the appropriate run level, in your case probably 5). 
If you need an explanation of run levels, I have a presentation from
last June's meeting that you can consult:
http://www.blu.org/cgi-bin/calendar/2006-jun
 On Fri, 30 Mar 2007 13:40:43 -0400
"stephen goldman" <sgoldman at MIT.EDU> wrote:

> Hello Blu,
>     Request assistance creating sys links for Matlab license server program.
> 
>     I have a CASE statement that need to start the program with the user called matlab.
> The text file is called  "flexnet" it is placed in the /ect/init.d  directory below- 
> 
>     The lmboot program which starts the app is located at /usr/local/matlab704/etc/lmboot_TMW
>     
>     Request direction on how the syslinks should be created and where they should be placed.
> 
> !#/bin/bash
> #MATLAB FLEXnet Network License Manager Daemon
> #
> #       For boot-time initialization on Linux
> #
> # Steps: (as root)
> #
> #    If the following links do not exist create them:
> #
> #    ln -s $MATLAB/etc/lmboot /etc/lmboot_TMW
> #    ln -s $MATLAB/etc/lmdown /etc/lmdown_TMW
> #
> #THIS is the path to where LMBOOT and LMDOWN are 
> #
> #    /usr/local/matlab704/etc
> #
> #I    'm not sure why I am creating sym links - 
> #I think the paths should be modified to reflect the true path-
> #What directory should the sys links be placed in ? 
> #
> #
> #    
> #    Then:
> #
> #    cp $MATLAB/etc/flexnet.boot.linux /etc/rc.d/init.d/flexnet (Red Hat, Fedora
>  Core)
> #
> #
> #COPY TO  /etc/rc.d/init.d  ok 
> #
> #
> #    CRITICAL: replace username argument to the lmboot_TMW commands 
> #              below by a real usename OTHER than root!     USER NAME IS matlab 
>          done !
> #
> #    Look in /etc/inittab for the default runlevel. Create
> #    a link in the rc directory associated with that run
> #    level. For example if it is 5, then
> #
> #     id:5:initdefault:  ok 
> #
> #
> #    
> #    cd /etc/rc.d/rc5.d;   ln -s ../init.d/flexnet S90flexnet (Red Hat, Fedora C
> ore)
> #
> #      lrwxrwxrwx   1 root root   17 Mar 29 19:30 S90flexnet -> ../init.d/flexne
> t       created the link 
> #
> #     case statement
> #
> case "$1" in
>   start)5
> 
>         if [ -f /etc/lmboot_TMW ]; then
>             /etc/lmboot_TMW -u matlab && echo 'MATLAB_lmgrd'
>         fi
>         ;;
>   stop)
>         if [ -f /etc/lmdown_TMW ]; then
>             /etc/lmdown_TMW  > /dev/null 2>&1
>         fi
>         ;;
>   *)
>         echo "Usage: $0 {start|stop}"
>         exit 1
>         ;;
> esac
> 
> exit 0
> 
> -- 
> This message has been scanned for viruses and
> dangerous content by MailScanner, and is
> believed to be clean.
> 
> _______________________________________________
> Discuss mailing list
> Discuss at blu.org
> http://lists.blu.org/mailman/listinfo/discuss
> 


-- 
Jerry Feldman <gaf at blu.org>
Boston Linux and Unix user group
http://www.blu.org PGP key id:C5061EA9
PGP Key fingerprint:053C 73EC 3AC1 5C44 3E14 9245 FB00 3ED5 C506 1EA9