Request for sh script for compressing files

[bgobs]

I need bash script to backup my sites. Something like this:

(I dont know very well english so I'll try to explain myself with PHP )

$date = date("m-Y-");
$sitesPath = "/some/path/to/web/sites/";
if (is_dir($sitesPath)) {
	$handle = opendir($sitesPath);
	if (!empty($handle)) {
		while (false !== ($file = readdir($handle))) {
			if (is_dir($sitesPath.$file)) { $dir_array[] = $file; }
		}
		
	}
	closedir($handle);
}


if (is_array($dir_array)) {
	foreach ($dir_array as $dir) {
		echo "Archiving: ".$sitesPath."/".$dir."<br />";
		exec("tar -zcvf ".$date."-".$dir.".tar.gz ".$sitesPath."/".$dir);
	}
}

Can someone write bash script for me and for free? just for my deep dark brown eyes ?

And of course sorry for my english

Thanks for reading !

[J65nko]

I once made the mistake to look to deeply in the brown eyes of my then future wife.

Anyway, something like this?

#!/bin/sh

SITES='
/home/www/site-1
/home/www/site-2
/home/www/site-3
'


for THIS in ${SITES} ; do
    DATE=$(date "+%Y-%m-%d_%H-%M")
    SITENAME=$(basename ${THIS})
    echo tar cvzf ${DATE}_${SITENAME}.tgz -C ${THIS}
done

Run with debugging so you can see the expansion of the variables

$ sh -vx site_backup 
#!/bin/sh

SITES='
/home/www/site-1
/home/www/site-2
/home/www/site-3
'
+ SITES=
/home/www/site-1
/home/www/site-2
/home/www/site-3



for THIS in ${SITES} ; do
    DATE=$(date "+%Y-%m-%d_%H-%M")
    SITENAME=$(basename ${THIS})
    echo tar cvzf ${DATE}_${SITENAME}.tgz -C ${THIS}
done
+ date +%Y-%m-%d_%H-%M
+ DATE=2010-01-16_00-13
+ basename /home/www/site-1
+ SITENAME=site-1
+ echo tar cvzf 2010-01-16_00-13_site-1.tgz -C /home/www/site-1
tar cvzf 2010-01-16_00-13_site-1.tgz -C /home/www/site-1
+ date +%Y-%m-%d_%H-%M
+ DATE=2010-01-16_00-13
+ basename /home/www/site-2
+ SITENAME=site-2
+ echo tar cvzf 2010-01-16_00-13_site-2.tgz -C /home/www/site-2
tar cvzf 2010-01-16_00-13_site-2.tgz -C /home/www/site-2
+ date +%Y-%m-%d_%H-%M
+ DATE=2010-01-16_00-13
+ basename /home/www/site-3
+ SITENAME=site-3
+ echo tar cvzf 2010-01-16_00-13_site-3.tgz -C /home/www/site-3
tar cvzf 2010-01-16_00-13_site-3.tgz -C /home/www/site-3

For operation in real, you need to delete the echo in front of the tar command.

[bgobs]

Thanks J65nko!

[J65nko]

On reviewing it, I see I forgot to specify the directory to backup.

Solution 1: Omit the "-C", that only changes the directory
Disadvantage: the path will be in the backup

Solution 2: Do something like this

tar cvzf 2010-01-16_00-13_site-2.tgz -C /home/www site-1

You can use dirname(1) to extract the path for "-C"

$ dirname /home/www/site-1
/home/www
$ basename home/www/site-1
site-1

I probably couldn't concentrate because of the memories of the brown eyes

Leaving out the "-C" option

# tar cvzf robert /home/robert    
tar: Removing leading / from absolute path names in the archive
home/robert
home/robert/.cshrc
home/robert/.login
home/robert/.mailrc
home/robert/.profile
home/robert/Maildir
home/robert/Maildir/tmp
home/robert/Maildir/new
home/robert/Maildir/cur
home/robert/.exrc

Here the home dir is stored.

tar cvzf robert -C /home robert                                                 
robert
robert/.cshrc
robert/.login
robert/.mailrc
robert/.profile
robert/Maildir
robert/Maildir/tmp
robert/Maildir/new
robert/Maildir/cur
robert/.exrc

Here only the "robert' directory name.

[TerryP]

If you change

SITES='
/home/www/site-1
/home/www/site-2
/home/www/site-3
'

to:

SITES=${SITES:-'
/home/www/site-1
/home/www/site-2
/home/www/site-3
'}

You can also override the default list of sites by exporting the SITES environment variable before you run the script. E.g. $ SITES="/a /b /c"; export SITES; run-script-here. Other variations of possible, if you read the shells manual page about expansions.

[J65nko]

You even don't have to export the variables, you could use env(1):

# env SITES='/usr/local/www/aaa /usr/local/www/bbb'  site-backup