matisojka

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ sudo docker volume rm $(sudo docker volume ls -qf dangling=true)

$ sudo docker volume ls -qf dangling=true | xargs -r sudo docker volume rm

JPvRiel

Troubleshoot "Could not get lock /var/lib/dpkg/lock" errors when trying to update or install debian packages

Error Message

E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?

JPvRiel

Logging bash history to syslog

Overview

Bash history was a convenience feature to help a user recall previous commands and not intended to meet any security requirements.

The Linux audit system (or alternate kernel level audit OS facility) is a more robust way to ensure user and process log events are recorded.

Security issues with bash history files and $BASH_COMMAND

karenyyng

Table Of Content

Skip to the relevant sections if needed.

• 2-min tutorial to do it the quick-and-dirty-way
• Concepts for resolving Git conflicts
• Setting up different editors / tool for using git mergetool
  • Finding out what mergetool editors are supported
• mergetool simple code example for vimdiff
  • Resolving conflict from a Git pull
• Other great references and tutorials

alexdresko

<#@ template language="C#" debug="true" hostspecific="true" #>
<#@ output extension=".d.ts" #>
<#@ assembly name="System.Core" #>
<#@ assembly name="Microsoft.VisualStudio.Shell.Interop.8.0" #>
<#@ assembly name="EnvDTE" #>
<#@ assembly name="EnvDTE80" #>
<#@ import namespace="System.Collections.Generic" #>
<#@ import namespace="System.Linq" #>
<#@ import namespace="System.Text" #>
<#@ import namespace="EnvDTE" #>

tony4d

Download and install p4merge

• Download the perforce visual tool suite from here: http://www.perforce.com/perforce/downloads/index.html
• Copy only the p4merge.app file into your /Applications/ directory

Setup p4merge as a visual mergetool