Mailinglist Archive: opensuse (2271 mails)

[Martin Mielke <martin.mielke@xxxxxxxxxxxxx>]

Hi,

handy wrote:

> Hi  I am a novice in Linux.
> I want to do something in my sles with create a script for my database...my question is :
>
> 1. How to create a filename with date month year :
>    For example : my filename -> backup30012004
>  

From 'man date':

   %d     day of month (01..31)

   %m     month (01..12)

   %Y     year (1970...)


it's quite easy to use and implement:

   a) you can declare (note the backquotes):

         day=`date +"%d"`
         month=`date +"%m"`
         year=`date +"%"`

         full_date=${day}${month}${day}

         or

         full_date=${day}.${month}.${day}

         or

         full_date=${year}${month}${day}

      so, your file would be:

         mv original_filename  backup_$fulldate


   b) as in a), you declare $day, $month and $year but you don't 
declare $full_date:

         mv original_filename backup_${day}${month}${day}


> 2. If I want compress with gzip, can I create the filename with date month year directly .
>   For example : gzip -9 backup30012004
>    If it is can be... how to make it
>  

IIRC, gzip doesn't feature file renaming...
Taken from 'man gzip':
---
Whenever possible, each file is replaced by one with the extension .gz, 
while  keeping  the  same  ownership  modes,  access  and modification 
times.
---

In your case, if you want to have a compressed backupDDMMYYYY file, do 
the backup on that filename and then compress it. A very general way:

   1. tar -cvf mybackup_${full_date}.tar

   2. gzip -v mybackup_${full_date}.tar


HTH,
Martin