Admins eHow SysAdmin Tips & Tricks

October 2, 2014

Minima wallpaper pack for Mobile / Tablets

Filed under: Android,Apple,General — Tags: , , — admin @ 3:50 am

Here are some beautiful minimalist wallpapers for your mobile device. Preview :

wallpaper-preview

Download : Minima-WP-Pack

September 25, 2014

The Internet’s hilarious reaction to #bendgate

Filed under: General — admin @ 9:34 am

Very well deserve it #Apple 😀 #GETREKT


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September 24, 2014

Apple released iPant and special bend fixing tools for iPhone 6/6+ owners

Filed under: Apple,iPhone — Tags: , , , , — admin @ 7:19 pm

In the wake of the news that iPhone 6/6+ are being bent in the pockets of users :
http://www.reddit.com/r/iphone/comments/2hbmwd/so_have_any_of_your_6plus_actually_bent/


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September 21, 2014

#AppleWave, The new way to charge your iPhone super fast

Filed under: Apple — Tags: , , , , , — admin @ 6:34 am

If you have an iPhone 6/6+ or an older iPhone with with iOS 8, then you can benefit from Apple’s new technology called Apple Wave. iOS 8 contains drivers which enables iPhone to be charged using any normal household microwave. I personally tried it myself and was able to charge an iPhone from 20% to 90% in about 60 seconds. This is really awesome.

Here is Apple’s official introduction to Apple Wave :

apple-wave

September 10, 2014

A few words with iSheeps who are going to buy iPhone 6/6+

Filed under: Android,Apple,iPhone — Tags: , , , , — admin @ 6:52 am

iphone-troll

I feel you iSheeps, it should be so hard that everyone pokes fun at you because of your nonsense ideas like golden size or rule of Thumb ? Do you remember calling bigger phones bricks ? NOW YOU HAVE A BIG 5.5″ BRICK. Don’t forget that Galaxy S5 is only 5.2″, smaller than iPhone 6+. Ha, you cant remember right !? Suddenly you cant remember. OK Let me help you then :
http://gizmodo.com/5847981/this-is-why-the-iphones-screen-will-always-be-35-inches


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September 6, 2014

Send weekly reports of IPs logged into vsftpd

Filed under: linux — Tags: , , , — admin @ 10:25 am
root@X:[/etc/logrotate.d]: cat /etc/logrotate.d/vsftpd

/var/log/vsftpd.log
{
        create 640 root adm

        # ftpd doesn't handle SIGHUP properly
        missingok
        notifempty
        rotate 4
        weekly
        prerotate
                echo "<html><body><table>$(grep "OK LOGIN" /var/log/vsftpd.log | awk '{print $8" "$12'} | sort | uniq -c | awk '{print "<tr><td>"$2"</td><td>"$3"</td><td>"$1"</td></tr>"}')</table></body></html>" | mail -a "Content-type: text/html" -s 'FTP REPORT' mail@domain.com
        endscript
}

September 1, 2014

Filter out comments and empty lines from config files

Filed under: Bash,linux — Tags: , , , , , — admin @ 12:38 pm
egrep -v "^[[:blank:]]*(#|$)" filename

Send email alerts if Adaptec raid fails in Linux

Filed under: linux — Tags: , , , , — admin @ 10:56 am

For Adaptec Raid you need arcconf tool to check the raid status, you can install it based on the instructions provided on this link (For Debian) :
http://hwraid.le-vert.net/wiki/DebianPackages
After you have arcconf installed, create /usr/bin/raidcheck with following content and make it executable :

#!/bin/bash
RESULT=$(arcconf GETCONFIG 1 | grep Status | grep -v "Not Installed" | grep -v Optimal)
if [ -n "$RESULT" ]; then
    wget http://domain.com/notify.php?m=RAID_ERROR -O /dev/null
    else echo "Raid is OK"
fi

Note : In my script I have chosen to use a php script on another server to send the alert, this way I wont need to install a mail server on every server which I am monitoring. you can do the same or change the wget line to whatever you want.
Put the script in the cron to check the raid status every 12 hours :

0 */12 * * * /usr/bin/raidcheck

Disable ipv6 on Linux

Filed under: linux — Tags: , , — admin @ 10:17 am

To disable ipv6 on Linux, add following line to /etc/sysctl.conf

net.ipv6.conf.all.disable_ipv6 = 1

Now apply the change :

sysctl -p

August 30, 2014

Backup cPanel accounts to DropBox

Filed under: cPanel,linux — Tags: , , , — admin @ 7:30 pm

Notice : You need root access to cPanel server to be able to use this method.
DropBox is my favorite cloud space provider. Their recent price adjustment (1TB for $10/mo) has made using it a no brainer IMO. It is specially very good for backup purposes because it keeps different versions of your files without using any extra space. The retention period for free accounts is 30 days and for pro accounts is 1 year.
So lets say you take a backup of your website and upload it to DropBox everyday and size of your backup is 100MB. if you keep doing it for 1 year, in fact DropBox is keeping 365 x 100MB of your files which you can retrieve any of them while only 100MB of your space is used! it is crazy good, I know.
In order to be able to backup cPanel accounts directly to DropBox, first we need a method to upload files to DropBox from Linux command line. Fortunately there is a very good solution out there to do it : https://github.com/andreafabrizi/Dropbox-Uploader
Please refer to script documentation on how to install it on your server and link it to your DropBox account. it is fairly easy.
After you linked the script to your DropBox Account, move it to /usr/bin folder.
If you want to test it, run the following command and it should show your DropBox account info :

root@X:[~]: dropbox_uploader.sh info
Dropbox Uploader v0.14

 > Getting info...

Name:   X X
UID:    012345
Email:  email@domain.com
Quota:  1021760 Mb
Used:   2611 Mb
Free:   1019148 Mb

Now create /usr/bin/backup2db with following content and make it executable :

#!/bin/bash
for fn in $1; do
/scripts/pkgacct $fn
/usr/bin/dropbox_uploader.sh upload /home/cpmove-$fn.tar.gz /cpanel-backup/cpmove-$fn.tar.gz
rm /home/cpmove-$fn.tar.gz
done

Thats it ! We are good to go.
Command to backup cPanel account acct1 :

backup2db 'acct1'

It even support multiple account backup :

backup2db 'acct1 acct2 acct3'

If you need daily backups, you can put it in cron :

0 0 * * * /usr/bin/backup2db 'acct1 acct2 acct3' > /dev/null 2>&1
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