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Linux Administration

Linux Administration presents a collection of common issues and useful tips for Linux system administration. Whether you’re new to system administration or have been maintaining systems for some time, we hope these tips are helpful regardless of your background or choice in Linux distributions.

Linux file system hierarchy v1.0

Linux file system hierarchy - Linux file structure - blackMORE Ops

What is a file in Linux? What is file system in Linux? Where are all the configuration files? Where do I keep my downloaded applications? Is there really a filesystem standard structure in Linux? Well, the above image explains Linux file system hierarchy in a very simple and non-complex way. It's very useful when you're looking for a configuration file or a binary file. I've added some explanation and examples below, but that's TL;DR.

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Fixing error: Package packagename is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package ‘packagename’ has no installation candidate

Fixing error: Package packagename is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package ‘packagename’ has no installation candidate - blackMORE Ops

A common error in Linux A very common error in Linux; well, most Debian based Linux distributions such as Debian itself, Ubuntu, Kali, Linux Mint has this error when trying to install a package/application “Package packagename is not available, but is referred to by another package. This may mean that …

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Fixing ProxyChains ERROR: ld.so: object ‘libproxychains.so.3’ from LD_PRELOAD cannot be preloaded: ignored.

Fixing ProxyChains ERROR: ld.so: object 'libproxychains.so.3' from LD_PRELOAD cannot be preloaded: ignored. - blackMORE Ops - 1

Nullsec posted on – November 29, 2014 at 7:53 pm regarding ProxyChains giving an error: ERROR: ld.so: object ‘libproxychains.so.3’ from LD_PRELOAD cannot be preloaded: ignored. Essentially, this might expose you. Following fix was also posted by NullSec, ‘Thank you‘. (I’ve only formatted his comment to make it more user-readable!) ProxyChains …

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