Debian: Set python 3 as default

Hi,

debian is still delivered with 2.7 as the default version of python. /usr/bin/python is in fact a symlink to the current default versions binary.

The update-alternatives scripts allows to change this.
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Creating and applying a patch with diff and patch

Hi,

this post describes to save and apply changes to an source file.
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Linux: mount.cifs failed with host is down

Hi,

due to some security issues (Wannacry) Windows administrators are going to disable the unsecure smb1 protocol.

mount.cifs is using smb1 by default. So when you tried to connect to a Windows machine where smb1 is disabled you get an error: mount error(112): Host is down.
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Linux: Rescan for new and changes of devices

Hi,

with virtualization it simply possible to change systems within a few mouse clicks. For example adding new disks or increasing the disk size of a hard disk without a reboot.
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Linux: Connection timed out, cannot reboot systemd based system

Hi,

sometimes it occours that a systemd based Linux cannot rebooted.
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