linux

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Tab completion is not working, how come?

Please check that the package readline has been installed.

Daily tip

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How do i convert an image file from the qemu qcow2 format to vdi for VirtualBox?

qemu-img.exe convert -f qcow2 file.qcow2 -O vdi file.vdi

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How to handle Redhat Satellite subscriptions?

Please run

subscription-manager-gui –register

or

subscription-manager register

Verify with

subscription-manager list –consumed

Than you need to disable all repos
subscription-manager repos –disable “*”

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Is there any known distro to have a failsafe or transactional model in its core?

NixOS (https://nixos.org), among other features, gives the possibility to always rollback in a transactional way to a previous system state without using any external software backup or snapshots like in VMware.

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How to create a password which can be used to grant access to some areas in your server?

With the Apache utility htpasswd like in the example below

htpasswd -c /usr/local/apache/passwd/passwords rbowen

Note that the password file must be outside the DocumentRoot FOlder and therefore outside from Internet reach, for obvious reasons.

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How do I list the content of a Debian package?

$ dpkg –contents <package>

or

$ dpkg -c <package>