We often get asked, if there's a simple way to join PDFs from many images under linux. The task is very trivial, if you have 1-2 images, as you can use many of the graphical applications. If you have 10-20 or more, we recommend pdfjoin. It runs under Linux on a command line and allows for a quick images to PDF combine.
For some reason Zentyal 5 (and 4 before it) does not enable the vacation out-of-office message in Sogo (even thought the function is available in the software).
To enable it, follow these steps (you will need access to the command line console):
Sometimes it is a good idea to schedule a regular reboots, to clear the memory and remove any crashed processes.
This can be easily achieved by adding the task to a cron tab (Linux scheduling system):
First, open the crontab (as a root):
and add a line similar to this:
This works on any modern distribution of Linux, but we are using Ubuntu 14.04 for the process. First, install CIFS/Samba tools, required to mount the share point:
apt-get install cifs-utils
Now let's create the credentials file:
This tutorial is for adding extra disks to an already existing system, not conerting current ones to RAID. We are adding a RAID1 software RAID to most common Linux distributions (this should work on any one of them).
We have used 2 disks for this:
There are some circumstances where you have to unmount a drive, but it is not letting you. Giving an error, similar to this:
umount: /mnt/backup: device is busy.
(In some cases useful info about processes that use
the device is found by lsof(8) or fuser(1))
The IPs in the VPN are assigned randomly. If you have your router configured using something like Tomato, you can setup the reservation by MAC address. For the linux-based install, follow these steps:
1) To begin, first identify the directory, where the files will be stored:
Q. I am getting a Forbidden 403 error after I've changed the DocumentRoot in Apache for my domain. What do I do?
A. This is a security feature on the Apache running on Ubuntu (and Debian). The solution is quite simple:
Here's a quick way to determine if the week is odd or even in bash. You can replace the "even" and "odd" with whatever functions you are looking to perform (eg. backup)
Copy and paste this into a file:
- Setup VNC in Ubuntu
- CentOS 7 Linux - missing ifconfig
- Generate CSR (Certificate Signing Request for SSL)
- Enable subject logging in Postfix