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Fix Class ‘DOMDocument’ not found error
If you are using the DOMDocument in your projects and get this error:
PHP Fatal error: Uncaught Error: Class 'DOMDocument' not found
you can fix it installing…
debian
14 commands for basic Postgres administration
psql is a CLI client for Postgres administration, psql allows:
– Connect to the server
– Create DB
– Admin users
– Execute SQL queries and perform administration tasks in general.
How to install Debian, expert mode
Debian is a highly recommended distribution for server environments due to:
- His version release philosophy. Debian does not have a fixed cycle to release new versions, but each version is released once the development team considers it stable enough (released when it is ready).
- Packages inclusion policy: only stable and well-tested packages are included.
- Its robustness and stability.
How to install PostgreSQL in Debian
PostgreSQL is a powerful object-relational database system with more than 30 years of active development that has gained a high reputation for reliability, robustness and performance.
XFCE: Resolve Print Screen does not work
In Debian XFCE Prt Scr key is not associated with the command xfce4-screenshoter, utility to perform screen captures, if we want to set this shortcut to make screenshots we must follow the following steps
How to know if a package is installed
We can use the aptitude command to know if a package has been installed on Debian GNU/Linux or derivative. In CentOS/RHEL/Fedora you can use yum
How to know the installed version of Debian/Ubuntu?
We can know the version of Debian / Ubuntu we have installed by running the following command:
$ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=14.04 DISTRIB_CODENAME=trusty DISTRIB_DESCRIPTION="Ubuntu 14.04.4 LTS"
Suspend or Hibernate in Debian XFCE
If you have installed Debian XFCE and you try putting your computer into hibernation or suspension mode as shown in the figure:
Handle NTFS partitions in GNU/Linux
To handle NTFS partitions in GNU/Linux you should install the package ntfs-3g
Note: From April 2011 the ntfs-3g and ntfsprogs projects joined forces so now everything is in a single suite: ntfs-3g.
Most likely your distribution may already have installed the suite ntfs-3g else you can do it by exec
Debian/Ubuntu
$ sudo apt-get install ntfs-3g
CentOS/Fedora/RHEL
# yum install ntfs-3g
Find duplicated files in GNU/Linux
One of the easiest and safest ways to find duplicate files on GNU / Linux files is using the tool fdupes, fdupes find duplicate files comparing the file sizes, making a check MD5 followed by a byte to byte comparison.