nixCraft

meowing · #1 (**permalink**) 06-07-2009, 08:10 PM

Hi,

I run some server-based webcams, they place non-descriptive files in a folder each x seconds. "camshot.jpg", "camshot1.jpg" and "camshot2.jpg" (for example). These files get overwritten each time the webcams put them there. (Since this is hardcoded in the webcams, I can't change that..)

Now I would like to be able to archive those files with a cron command. To achieve that I need to copy a file the webcam drops (in its dedicated folder) to a different folder, and then insert a date-time in the name, like so:

/www/netcam/camshot.jpg
/www/netcam/camshot1.jpg

will be copied as/to (for example):

/www/archive/20090615_22h50m24s_camshot.jpg
/www/archive/20090615_22h52m12s_camshot1.jpg

Inserted time and date should be obtained from the file-creation stamp (last modified time).
Anyone have a script I can use for this? (Can be perl, bash or whatever runs on a debain-based server.)

There's a Windows script I found for a similar task here, but don't know how to best use it in a linux-world..

Thanks for any and all hints,

M

jaysunn · #2 (**permalink**) 06-07-2009, 10:23 PM

Give this a try. You can modify the variables as needed. Make sure you change the admin email to yours. I have this running nightly to backup data on one of my RHEL servers. Should be portable to Debian. I have used your data to modify the script. However this will backup the directory of individual files. You can modify it if you need each file tarred.

Create the script.sh and add the perl code below.

Code:

#vi script.sh

Make the script executable.

Code:

chmod +x script.sh

Create a cron job for the server to execute the script nightly or whenever.

Code:

crontab -e 

0 0 * * * /path_to_script/script.sh

Code:

#!/usr/bin/perl

#trim subroutine added
sub trim {
    my @out = @_;
    for (@out) {
        s/^\s+//;
        s/\s+$//;
    }
    return wantarray ? @out : $out[0];
}



# Define some global variables. 
$backupDirectory ="/www/archive/";

#folder or files to backup
$folderToBackup = "/www/netcam/";

# Create the temporary directory to keep backups
`mkdir -p /tmp/backups/`;


#get date string 
$dateString = `date +%Y%m%d`;
chop($dateString);

$hostName = `/bin/hostname`;
$hostName = trim($hostName);

#form backup file name 
$backupFileName = $hostName . "_netcam_backup_" . $dateString . ".tar.gz";


# Tar/gzip data 
`tar czf /tmp/backups/$backupFileName $folderToBackup 1>/dev/null 2>/dev/null`;

#move data to backup folder
`cp -f /tmp/backups/$backupFileName $backupDirectory/`;


#check if file was created if not email 
if(!(-e "$backupDirectory/$backupFileName"))
{
   `echo $hostName www Backup Failed | mail admin\@domainname.com` ;
}



#detele all tmp files and directory
`rm -f /tmp/backups/$backupFileName`;
`rm -rf /tmp/backups/`;

meowing · #3 (**permalink**) 07-07-2009, 05:21 AM

Hmm.. this doesn't work for what I want. It tars folders and ads a hostname. I only need to copy a file and have part of the name of the file changed.

Basically, all I need is:

camshot.jpg copied to some other folder as 20090713_22h50m24s_camshot.jpg

where that date-time string is crucial and should look exactly like this;
YYYYMMDD_HHhMMmSSs_originalfilename.jpg

What part of your script causes the date+time insertion? Because I see $folderToBackup return only once, and that's in the tar.gz part.

jaysunn · #4 (**permalink**) 08-07-2009, 06:55 PM

The portion of the script that inserts the date is:

Code:

#get date string 
$dateString = `date +%Y%m%d`;
chop($dateString);

Change that to:

Code:

#get date string 
$dateString = `date +%Y%m%d_%Hh%Mm%Ss_`;
chop($dateString);

From my test that outputs:

Code:

[root@server ~]# date +%Y%m%d_%Hh%Mm%Ss_camshot.jpg
20090708_08h46m28s_camshot.jpg
[root@server ~]#

Sorry that this is not exactly what you are looking for. I think you basically just want to copy the files in the current location to the archive location and append its original date from the original copy to the file in the correct date format.

I will try to write something that does that. I am still learning scripting. I may be over thinking this as well.

Jaysunn

Jaysunn

meowing · #5 (**permalink**) 08-07-2009, 07:05 PM

Quote:

Originally Posted by jaysunn

Code:

[root@server ~]# date +%Y%m%d_%Hh%Mm%Ss_camshot.jpg
20090708_08h46m28s_camshot.jpg
[root@server ~]#

This uses the current date, and does not insert it in the filename, but we're getting there..

Thanks for the effort anyway

meowing · #6 (**permalink**) 20-07-2009, 07:04 PM

bump
If anyone has something useful for this, that'd be great..

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nixCraft

copy file with standard name by inserting file-date and time in name

copy file with standard name by inserting file-date and time in name

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meowing (08-07-2009)