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Full Discussion: Setting Environment variable from value in file
Top Forums Shell Programming and Scripting Setting Environment variable from value in file Post 302401303 by WolfBrother on Friday 5th of March 2010 12:36:29 PM
Old 03-05-2010
Quote:
Originally Posted by methyl
What shell do you use (ksh, bash, sh ... whatever) ?
What are the names and example values of the three environment variables?

The sourcing using dot-space-scriptname advised above is the correct method.

Korn Shell. 1 environment variable - 3 possible values at this time.

File names and value's
1mo - XFG1moDR
2mo - XFG2mo
3mo - XFG3mo.

The environment variable in one of the korn shell scripts needing one of the three values depending on the backup requirements:
NB_ORA_SCHED.

I'm wanting to read/source/bring in the value of one the 3 files.
As in
whatever it takes to get 1mo value into a variable in the shell and then:
export NB_ORA_SCHED=<shell variable>

I have 17 Oracle instances on a very large server,
each instance with it's own backup script.

9 uses the value in 3mo, 6 uses the value in 2mo, and 2 uses the value in 1mo as the value for the environment variable NB_ORA_SCHED.

Over the past few years - as the process changes - these values have changed. SO rather than manually editing 17 scripts to change the value, I'm wanting to edit 1 of 3 files as needed.

Again, these scripts are parameterized to some degree within the script. However, they are written so that if my backup, my backup's backup, my backup's backup's backup, and I get hit with a bus, any DBA can be given access to the server and will be able to manually (if needed) submit the backup without having to know anything other than
1. log on to server
2. go to this place
3. manually submit this .ksh script.

The plan is to make it as simple as it should be but no simpler.

As a note. Above, when I mentioned the process, you need to understand the way its done here. We have any number of pointy headed managers who feel the need to do something managerish fairly frequently. One way to do that is to rename items. So what one month may be bk_onsite_1mo may become XFG1mo the next.

You must understand - the process is paramount. Resistance is futile, you will be assimilated.

Being able to put values that change into a file that get read into a ksh script is one way to cut down on the impact of such managerish actions.

The scripting guru was not assimilated, he managed to go somewhere else. Me, I get to learn more about Korn shell scripting now.

Thanks again.
WolfBrother
 

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LEARN ABOUT HPUX

vxconfigbackupd

vxconfigbackupd(1M)													       vxconfigbackupd(1M)

NAME

       vxconfigbackupd - disk group configuration backup daemon

SYNOPSIS

       vxconfigbackupd [-l]

DESCRIPTION

       The vxconfigbackupd daemon automatically backs up information about a disk group's new configuration whenever the configuration is changed.

OPTIONS

       -l	 Logs backup daemon activities to the file /etc/vx/cbr/bkdaemonLog.

FILES

       /sbin/init.d/vxvm-recover
		 Startup file for vxconfigbackupd.

       /etc/vx/cbr/bk/dgname.dgid/dgid.dginfo
		 Location of backup file for disk group information.

       /etc/vx/cbr/bk/dgname.dgid/dgid.diskinfo
		 Location of backup file for disk attributes.

       /etc/vx/cbr/bk/dgname.dgid/dgid.binconfig
		 Location of backup file for binary configuration copy.

       /etc/vx/cbr/bk/dgname.dgid/dgid.cfgrec
		 Location of backup file for configuration records in vxprint -m format.

NOTES

       The vxconfigbackup command can be used to back up a disk group's configuration manually at any desired time.

       The  disk  group  configuration	backup and restore utilities do not save any data in the public region. This includes file system or other
       application data that is configured within VxVM objects.

       When a disk group is destroyed, its configuration backup information (including the backup directory) is also removed.  The only  exception
       to this behavior is when the disk group is in the precommit state of restoration.

       The  backup  directory should be large enough to accommodate copies of all the currently imported disk groups. The minimum recommended size
       of the backup directory is P * (N + 1) megabytes, where P is the private region in megabytes (by default, 32MB), and N  is  the	number	of
       disk  groups. The additional P megabytes is required to hold a temporary copy of the disk group configuration when a disk group is imported
       or a configuration change is made.

       The default backup directory is /etc/vx/cbr/bk.	The location of the backup directory can be configured	by  using  the	vxconfigbackup	-l
       backup_directory_path command.

SEE ALSO

       vxconfigbackup(1M), vxconfigrestore(1M)

VxVM 5.0.31.1							    24 Mar 2008 					       vxconfigbackupd(1M)
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