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Full Discussion: Need help with a backup shell script
Top Forums Shell Programming and Scripting Need help with a backup shell script Post 302372783 by rhm54 on Wednesday 18th of November 2009 06:32:54 PM
Old 11-18-2009
Need help with a backup shell script
am writing my very first shell script and need some assistance. What I need help on is three things in particular.

1) Do I need to use the sleep function after the tar command or does the script know to wait until tar finishes to move on to the next line?
2) Did I populate the variable DATE correctly? I want it to be populated in the format MMDDYY.
3) How do I calculate the date from two days ago so that I only keep two backups on the server?

Here is what I have so far

Code:
#ServiceCenter Backup Script
#Author: Robert McDougal
#Date: 11/18/2009
#Last Updated: 11/18/2009

RUN_DIR=/Web/servers/servicecenter/RUN
BACKUP_DIR=/Web/servers/servicecenter/...
SC_DIR=/Web/servers/servicecenter
DATE=date '%m%d%y'

#Changing to the RUN directory
cd RUN_DIR
#Scheduling a regular shutdown of ServiceCenter(Can take up to 10 min).
scstop u -s
#The script will wait 10 minutes before proceeding to the next command
#This is to ensure that servicecenter shuts down completely before proceeding.
sleep 600
#This code will cause service center to force close immediately.
scstop u -if
#Changing to the Servicecenter Directory
cd SC_DIR
#Tar'ing the data directory
tar ./Backups/DATE.tar data
#Changing back to the run directory
cd RUN_DIR
#Starting ServiceCenter back up
scstart
#Changing to the Backup directory
cd BACKUP_DIR
#Gzipping the lattest backup
gzip DATE.tar
#Deleting the backup from two days ago
rm DATE-2.*

exit

 

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LEARN ABOUT OPENSOLARIS

script

script(1)							   User Commands							 script(1)

NAME

       script - make record of a terminal session

SYNOPSIS

       script [-a] [filename]

DESCRIPTION

       The  script  utility  makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the
       record is saved in the file typescript. See WARNINGS.

       The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends
       when the forked shell exits or when Control-d is typed.

OPTIONS

       The following option is supported:

       -a    Appends the session record to filename, rather than overwriting it.

NOTES

       script places everything that appears on the screen in filename, including prompts.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5)

WARNINGS

       script  can  pose  a  security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a
       privileged user, that is, root. Be sure that typescript is not a link before running script.

SunOS 5.11							    30 Jan 2004 							 script(1)
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