topic Re: shell scripting in Operating System - HP-UX

shell scripting

hari prasad_4 — Tue, 18 Apr 2006 02:08:51 GMT

Hi guys,

i need some help on shell scripting, currently i have written one script which take backup of some files and place it on one of the other partition with date and time stamp specified on the file name.

i want to know how to make retention period for the same.

shell script is given below

!#/bin/sh
FILENAME=`date +3dpl_lv0_%Y%m%d%H%M`
cp /essbdata1/levzerodata/lev03dpl.txt /essbdata1/back-hyp/${FILENAME}.txt
tar -cvf ${FILENAME}.tar ${FILENAME}.txt
gzip ${FILENAME}.tar

thanks in advance

Re: shell scripting

Kenan Erdey — Tue, 18 Apr 2006 02:47:19 GMT

you can write and another script and which checks the period you specified, and delete archives which passsed retention time. then you can put it in cron.

Re: shell scripting

Peter Godron — Tue, 18 Apr 2006 03:12:11 GMT

Hari,
if you want to keep the tar file for 28 days:

cd tar-directory
find . -mtime +28 -exec rm -f {} \;

This finds and removes ALL files which have not been modified in the last 28 days. This also includes any sub-directories.

see man find for more details

Re: shell scripting

Antonio Cardoso_1 — Tue, 18 Apr 2006 03:19:48 GMT

Hi,
You may use cp -p to preserve date and time of file modifications, and then use 'find -mtime ' to manage retention period.

HTH,
antonio.

Re: shell scripting

hari prasad_4 — Tue, 18 Apr 2006 04:21:36 GMT

hi,
if you check the file name, it has been given as year month date hour and minute.

So based on that i need to check the file name.

thanks

Re: shell scripting

Peter Godron — Tue, 18 Apr 2006 04:31:41 GMT

Hari,
if you want to use the filename date, you could download a. Clay Stephensons caljd.sh
at http://mirrors.develooper.com/hpux/caljd-2.23.sh
and use the convert date to julian function.
Subtract the filename date from the current date and you would get the "age" of your file.

Re: shell scripting

hari prasad_4 — Tue, 18 Apr 2006 09:27:07 GMT

hi,

did you try this script can you let me know how this work, bcoz i need to implement those script in production and live servers

thanks

Re: shell scripting

Peter Godron — Tue, 18 Apr 2006 09:46:17 GMT

Hari,
download the latest version caljd-2.25.sh from the same directory and save it as caljd.sh
caljd.sh -help for more help
For your example:
$ ./caljd.sh -y 2006 04 18
2453844
For example if the filedate was 2006 05 17
$ ./caljd.sh -y
2453843

then subtract one from the other and you have the difference in days between the current date and the filename date.

Re: shell scripting

hari prasad_4 — Fri, 21 Apr 2006 23:29:53 GMT

thanks for all of your help

Re: shell scripting

hari prasad_4 — Fri, 21 Apr 2006 23:33:17 GMT