I am busy changing the world

"Fallor Ergo Sum - I err therefore I am" ~St. Augustine.

When PING was blocked on your network, BackupPC can not backup hosts because it will stop the backup process when there is no ping response. Here is a workaround to make the backup happen: Change the PingCMD (ping command) in the host setting of BackupPC webinterface: 1. Seclect the host then click " Edit Config " link. 2. In Backup Settings tab, PingCMD section, check " Override " and replace  "$pingPath -c 1 $host"  with "/bin/echo" 3. Click " Save "

This is a more precise way to get the list of activated theme on each blog in your WordPress Multisite:

You can use this: 1. Install wp-cli . 2. Create a bash script (export_blog_theme.sh) with the following content #! /bin/bash for url in $(wp site list --field=url --path=/path/to/your/wordpress/root) do         theme=$(wp option get template --url="$url" --path=/path/to/your/wordpress/root)         echo "$url,$theme" done 3. Make script executable: $ sudo chmod +x export_blog_theme.sh 4. Run the script: $ sudo -u www-data ./export_blog_theme.sh > blog_theme_list.csv Notes: Sometimes, the script return no result because of caches or WordPress db connection limitation.

Stop and Go Boutique Hotel , Da Lat, June 15th 2016.

Stop and Go Boutique Hotel ,  Da Lat, June 15th 2016.

Stop and Go Boutique Hotel , Da Lat, June 15th 2016.

Find out by: $ ps -A --no-headers | wc -l or $ ps -AL --no-headers | wc -l

I just got this error this morning when trying to run some php shell script: "Fatal Error Unable to allocate shared memory segment" I followed this following trick and it seemed to work: 1. Use ipcs -lm to determine current shared memory limits. And use ipcs -ma to determine how much shared memory is currently in use. 2. Increase maximum shared memory segment size from 32MB to 128MB. echo "134217728" >/proc/sys/kernel/shmmax echo "134217728" >/proc/sys/kernel/shmall And then retry. 3. If php5-fpm then works ok, make the change survive reboots, by placing an entry in /etc/sysctl.conf as below: kernel.shmmax=134217728 kernel.shmall=134217728

The Veeam Backup Free v9 is quite good but it lacks of scheduling the backup task. Fortunately, it supports powershell so you can leverage this following script to backup vms without upgrading to the Pro version: 1. Download and Install Veeam Backup & Replication Free v9 in a Windows machine (It's Windows Server 2008 R2 in my case): https://www.veeam.com/virtual-machine-backup-solution-free.html Note that It may require you to install Microsoft .NET framework 4.5.2 and Microsoft SQL Server 2012 Express if your server does not have them. 2. Install PowerShell v3, it's Windows Management Framework 3.0 (the script works best with PowerShell v3): https://www.microsoft.com/en-us/download/details.aspx?id=34595 for Windows Server 2008 R2, I installed the  Windows6.1-KB2506143-x64.msu package. 3. Download this file and edit it with your own information (server name, email settings...) 4. Create a schedule task to run the script every weekend at 1AM for example.

Just use this command: for i in *.CR2; do dcraw -c -a -h $i | ppmtojpeg > `basename $i CR2`JPG; echo $i done; done

When I's trying to startup my Oracle instance with this method  because It got the "ORA-01109 Database not open" error. I encountered another error: ORA-10873 file 1 needs to be either taken out of backup mode or media recovered Here is how I solved it. From the command prompt: sqlplus /@MYDBINSTANCE as sysdba STARTUP MOUNT SELECT * FROM V$BACKUP ALTER DATABASE END BACKUP ALTER DATABASE OPEN