: Where is the best place to get Calibre? If you search for Calibre you find multiple places to get this free ebook management tool from. I know some people have downloaded it and got lots

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The calibre download page has links to instructions for all platforms that for which downloads available:

Linux (detects install 32/64 bit itself)
OSX
Windows
Windows 64bit
Portable Windows

But you might want to check these direct links for being the official download places and not another junk-yard.

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Newer versions of Calibre come out on a regular basis and I have not found a site from where I can automatically install the latest packages for my Linux system using the normal packaging download system (apt-get).

I therefore use a small script named update-calibre. It kills the currently running Calibre, moves the previous version from /opt/calibre (prefix is easily changed) to a backup (/opt/calibre-) and then downloads and installs the latest version to/opt/calibre` using the script provided on the calibre site specifically for Linux installs.

So whenever the calibre interface tells me there is a new version I run update-calibre and restart to have the latest version.

#!/bin/bash

# change this to your preferred install location,
# **and** update the `sudo python` line!
BASE=/opt

# make sure the server stops
killall calibre
E=$BASE/calibre/calibre
if [ -e $E ]; then
V=$($E --version | tr ')' ' ' | cut -d ' ' -f 3 )
sudo mv "$E" "$E-$V"
fi

sudo python -c "import sys; py3 = sys.version_info[0] > 2; u = __import__('urlli
b.request' if py3 else 'urllib', fromlist=1); exec(u.urlopen('http://status.cali
bre-ebook.com/linux_installer').read()); main(install_dir='/opt')"

Make sure the last line in the script corresponds to the one specified on the linux install page.

Killing the calibre process is necessary, as closing the interface keeps calibre running. This results in a temporarily confused user, who does not understand why the newly downloaded version number does not show up in the interface, even though the program was started.

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The calibre home page is at calibre-ebook.com As this is open source you can see what is included in the download.

In general for all downloads never download from a place that lists downloads always look for the author's home page. Or you can trust places you know about by other means than a simple search.

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