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Old 06-22-2004, 01:36 AM   #1
onewhoknows
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Registered: May 2004
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How would I automate this?


I make daily backups for a server that currently names files based on date:

Here's the script I made that's cheap, but works.
Quote:
rm -rf staging/folder/* && mkdir staging/folder/21 && cp folder/aud/*2004-06-21.log staging/folder/21 && cp folder/aud/*06-21.log staging/folder/21 && cp folder/sta/*-062104.log staging/folder/21 && cp folder/*06-21.log staging/folder/21 && bzip2 staging/folder/21/*
What I did was manually change the dates "*06-21.log" would be "*06-22.log" the next day.

This worked fine when I was only making backups for one machine, but now I'm doing this for 10 machines and it's starting to take up a lot of time. What I'd like to know is if there's a way to make the dates change automatically. It's difficult since the naming convention is slightly different each time. Any tips or suggestions are very welcome!


Thank you
 
Old 06-22-2004, 01:58 AM   #2
scheidel21
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I would think if you wrote a command in there that processed the date into a variable you could simply use the variable instead of the date, and the date would come from the computer. ie

computer date ----->backupday

then change 2004-06-21.log to backupday.log

and if the folder changes as well I would think you should be able to trim the date and use the day. honestly I am not familiar with all of the commands in linux, but I am sure this can be done this way or similar, I am afraid due to my lack ok knowledge I can't tell you exactly what commands to use.

Alex
 
Old 06-22-2004, 02:04 AM   #3
onewhoknows
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Quote:
Originally posted by scheidel21
I would think if you wrote a command in there that processed the date into a variable you could simply use the variable instead of the date, and the date would come from the computer. ie

computer date ----->backupday

then change 2004-06-21.log to backupday.log

and if the folder changes as well I would think you should be able to trim the date and use the day. honestly I am not familiar with all of the commands in linux, but I am sure this can be done this way or similar, I am afraid due to my lack ok knowledge I can't tell you exactly what commands to use.

Alex
Thanks, Alex.

That's kind of what I was thinking, but I'm not sure how to factor in the different conventions for dates. I have YYYY-MM-DD, MM-DD, MMDDYY and a few different ones for other machines. *sigh*
 
Old 06-22-2004, 02:29 AM   #4
iluvatar
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You can insert the date in the filenames like in this example:

Code:
cp test test_$(date +%d-%m)_backup
using a $(...) construction, the output of the command inside the ( and ) is put in the filename you want to copy to. see "date --help" to list all output possibilities, any format like MM-DD-YYYY or DD-MM-YY is possible. My example above will create a file named: test_22-06_backup (it will at least today )

greetingz,
.-=~ iluvatar ~=-.

edit: here's just a list of the output possibilities for the 'date' command:
Code:
  %a   locale's abbreviated weekday name (Sun..Sat)
  %A   locale's full weekday name, variable length (Sunday..Saturday)
  %b   locale's abbreviated month name (Jan..Dec)
  %B   locale's full month name, variable length (January..December)
  %c   locale's date and time (Sat Nov 04 12:02:33 EST 1989)
  %d   day of month (01..31)
  %D   date (mm/dd/yy)
  %e   day of month, blank padded ( 1..31)
  %h   same as %b
  %H   hour (00..23)
  %I   hour (01..12)
  %j   day of year (001..366)
  %k   hour ( 0..23)
  %l   hour ( 1..12)
  %m   month (01..12)
  %M   minute (00..59)
  %n   a newline
  %p   locale's AM or PM
  %r   time, 12-hour (hh:mm:ss [AP]M)
  %s   seconds since 00:00:00, Jan 1, 1970 (a GNU extension)
  %S   second (00..60)
  %t   a horizontal tab
  %T   time, 24-hour (hh:mm:ss)
  %U   week number of year with Sunday as first day of week (00..53)
  %V   week number of year with Monday as first day of week (01..52)
  %w   day of week (0..6);  0 represents Sunday
  %W   week number of year with Monday as first day of week (00..53)
  %x   locale's date representation (mm/dd/yy)
  %X   locale's time representation (%H:%M:%S)
  %y   last two digits of year (00..99)
  %Y   year (1970...)
  %z   RFC-822 style numeric timezone (-0500) (a nonstandard extension)
  %Z   time zone (e.g., EDT), or nothing if no time zone is determinable
use "date +<format>"

Last edited by iluvatar; 06-22-2004 at 02:31 AM.
 
Old 06-22-2004, 02:43 AM   #5
onewhoknows
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Oh, awesome! I feel so stupid for not thinking of that

One other question... I might've missed it in --help, but is there a way to designate a day BEFORE? I'd have thought something like %d-1 would work, but I don't see anything for that in --help.

I really appreciate the help
 
Old 06-22-2004, 04:49 AM   #6
iluvatar
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hmmm you want the day before... tricky one %d-1 won't work, cause it might affect %m too when going to the previous month. you can write the current date to a file
Code:
date +%d-%m > date.txt
and use this file the next day, like
Code:
cp test test_$(cat date.txt)_backup
. after making the backup, you can write the current date to the file again, wich will then be used next day etc. etc.

greetz,
.-=~ iluvatar ~=-.

ps: you can use cron jobs to automaticly put the date in the file.
 
  


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