Re: [SLE] Help me please

From: Martin Mielke (martin.mielke_at_thales-is.com)
Date: 04/01/04

  • Next message: Pagan: "[SLE] cdrecord failures" 
    Date: Thu, 01 Apr 2004 11:04:18 +0200
To: suse-linux-e@suse.com

    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
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