Sharing the Knowledge's power
Adventure in code, science, ia and more
hadoop.cheatsheet
· ☕ 4 min read
#-# #-# Command line #-# #-# Namenode Command Description hadoop namenode -format Format HDFS filesystem from Namenode. hadoop namenode -upgrade Upgrade the NameNode. start-dfs.sh Start HDFS Daemons. stop-dfs.sh Stop HDFS Daemons. start-mapred.sh Start MapReduce Daemons. stop-mapred.sh Stop MapReduce Daemons. hadoop namenode -recover -force Recover namenode metadata after a cluster failure (may lose data). #-# Health Command Description hadoop fsck / Filesystem check on HDFS. hadoop fsck / -files Display files during check.
http.cheatsheet
· ☕ 9 min read
#-# #-# Headers #-# #-# Request headers Field Example Description Accept Accept: text/html Acceptable Content-Types for the response. Accept-Charset Accept-Charset: utf-8 Acceptable character sets. Accept-Encoding Accept-Encoding: gzip, deflate Acceptable encodings (for compression). Accept-Language Accept-Language: en-US Acceptable human langages. Accept-Datetime Accept-Datetime: Fri, 21 Dec 2012 06:06:06 GMT Acceptable time of last update. Authorization Authorization: Basic YnJvOmhvbmVzdGx5 HTTP authentication credentials. Cache-Control Cache-Control: no-cache Directives which caching mechanisms must obey. Connection Connection: keep-alive Type of preffered connection for the client.
hystrix.cheatsheet
· ☕ 6 min read
#-# #-# Annotations #-# #-# @HystrixCollapser Property Default Description collapserKey Name of annotated method Specifies a collapser key. batchMethod - Method name of batch command which must have the following signature: java.util.List method(java.util.List). scope Scope.REQUEST Defines what scope the collapsing should occur within. collapserProperties {} Specifies collapser properties. #-# @HystrixCommand Property Default Description groupKey Class name of annotated method Used for grouping together commands such as for reporting, alerting, etc.
irssi.cheatsheet
· ☕ 1 min read
#-# #-# Nick #-# Register current nickname. /msg nickserv register you@example.com Indent your nickname. /msg nickserv identify Set current nickname. /nick vrachieru #-# #-# Networks / Servers #-# Bind nickname with network. /network add -nick Connect to the network. /connect List networks. /network list Bind server with network. /server add -auto -network List servers. /server list #-# #-# Channels #-# Join to a channel. /join #channel Leave current channel. /part
jira.cheatsheet
· ☕ 1 min read
#-# #-# Keyboard shortcuts #-# #-# Global Shortcut Description gd Go to Dashboard gp Browse to a Project ga Go to Agile gi Find Issues gg Administration Quick Search / Quick Search . Quick Operations c Create an Issue Alt+Ctrl+s Form Submit #-# Navigation Shortcut Description o View selected Issue j Next Issue k Previous Issue [ Dock/Undock the Filters Panel n Next Activity p Previous Activity f Focus search field
markdown.cheatsheet
· ☕ 1 min read
#-# #-# Headers #-# h1 h3 Header 1 Header 2 #-# #-# Links #-# link [link][google] [google]: http://google.com http://google.com #-# #-# Images #-# #-# #-# Emphasis #-# italic italic bold bold #-# #-# Code #-# 4 space indent Blockquotes This is a blockquote Nested Blockquote #-# #-# Horizontal line #-#
maven.cheatsheet
· ☕ 2 min read
#-# #-# Commands #-# #-# General command structure mvn -P #-# Simple stuff mvn help mvn compile mvn validate mvn verify mvn test mvn clean mvn clean package mvn clean install mvn clean deploy #-# #-# Dependencies #-# #-# Scope Scope Description compile Compile dependencies are available in all classpaths of a project and are propagated to dependent projects. (default) provided Similar to compile, but indicates you expect the JDK or a container to provide the dependency at runtime.
sc #1
· ☕ 1 min read
welcome to science #1
skype.cheatsheet
· ☕ 5 min read
#-# #-# Chat types #-# To find out what type of chat you’re in, simply type /get name into the chat window and press Enter. Type Starts with cloud-based 19:… p2p-based #skypename… #-# #-# Cloud-based commands and roles #-# Role Description Admin Also known as chat hosts/masters. Admins can promote other people to admins. Speaker A member who can post messages into the chat and participate in calls. Command Description
tmux.cheatsheet
· ☕ 2 min read
#-# #-# Actions #-# KeyBind + Combination Key Description Ctrl+b % Split the current window vertically into two panes. Ctrl+b :split-window Horizontally split window or current pane. Ctrl+b o Switch to the next pane. Ctrl+b c Open new window. Ctrl+b l Move to previous window. Ctrl+b n Move to next window. Ctrl+b p Move to previous window. Ctrl+b d Detach current client. Ctrl+b x Kill the current pane. Ctrl+b & Kill the current window.
ubuntu.cheatsheet
· ☕ 2 min read
#-# #-# Keyboard shortcuts #-# #-# Gnome Shortcut Description Ctrl+Alt+F1 Switch to the first virtual terminal. Ctrl+Alt+F[2..6] Select the different virtual terminals. Ctrl+Alt+F7 Restore back to the current terminal session with X. Ctrl+Alt+Backspace Restart GNOME. Alt+Tab Switch between open programs. Ctrl+Alt+L Lock the screen. Alt+F1 Open the Applications menu. Alt+F2 Open the Run Application dialog box. Alt+F3 Open the Deskbar Applet. Alt+F4 Close the current window. Alt+F5 Unmaximize the current window.
vim.cheatsheet
· ☕ 4 min read
#-# #-# Cursor movement #-# Command Description h or ← move cursor left j or ↓ move cursor down k or → move cursor up l or ↑ move cursor right w jump forwards to the start of a word W jump forwards to the start of a word (words can contain punctuation) e jump forwards to the end of a word E jump forwards to the end of a word (words can contain punctuation)
Welcome
· ☕ 2 min read
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