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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Discussion started by: joemb
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LEARN ABOUT NETBSD
script
SCRIPT(1) BSD General Commands Manual SCRIPT(1)NAME
script -- make typescript of terminal session
SYNOPSIS
script [-adfpqr] [-c command] [file]
DESCRIPTION
script makes a typescript of everything printed on your terminal. It is useful for students who need a hardcopy record of an interactive
session as proof of an assignment, as the typescript file can be printed out later with lpr(1).
If the argument file is given, script saves all dialogue in file. If no file name is given, the typescript is saved in the file typescript.
Option:
-a Append the output to file or typescript, retaining the prior contents.
-c command
Run the named command instead of the shell. Useful for capturing the output of a program that behaves differently when associated
with a tty.
-d When playing back a session with the -p flag, don't sleep between records when playing back a timestamped session.
-f Flush output after each write. This is useful for watching the script output in real time.
-p Play back a session recorded with the -r flag in real time.
-q Be quiet, and don't output started and ended lines.
-r Record a session with input, output, and timestamping.
The script ends when the forked shell exits (a control-D to exit the Bourne shell (sh(1)), and exit, logout or control-d (if ignoreeof is not
set) for the C-shell, csh(1)).
Certain interactive commands, such as vi(1), create garbage in the typescript file. script works best with commands that do not manipulate
the screen, the results are meant to emulate a hardcopy terminal.
ENVIRONMENT
The following environment variable is used by script:
SHELL If the variable SHELL exists, the shell forked by script will be that shell. If SHELL is not set, the Bourne shell is assumed. (Most
shells set this variable automatically).
SEE ALSO csh(1) (for the history mechanism).
HISTORY
The script command appeared in 3.0BSD.
BUGS
script places everything in the log file, including linefeeds and backspaces. This is not what the naive user expects.
BSD October 17, 2009 BSD