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Need help with a backup shell script

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# 1  
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

# 2  
Old 11-18-2009
For ur Q.2..

U can populate date in MMDDYY format as follows:

DATE = 'date +%m%d%y'
# 3  
Old 11-18-2009
Q1 - Most shells wont move on to the next command until the first one finishes.

Q3 - Need to know what os you are using. If linux and gnu date, date -d '1 day' +%m-%d-%Y
# 4  
Old 11-18-2009
Thank you for the help thus far!

The OS we are using is Sun Solaris using the KSH shell.
# 5  
Old 11-26-2009
Thx for the help! I am trying to execute the above script and I am receiving the following error message

$ sh scbackup.sh
scbackup.sh: ^M: not found
scbackup.sh: ^M: not found
scbackup.sh: RUN_DIR^M: does not exist

I have tried the command:

unix2dos scbackup.sh

however I still get the error, any ideas?
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