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20151123-3 选题
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How To Install Microsoft Visual Studio Code on Linux
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================================================================================
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Visual Studio code (VScode) is the cross-platform Chromium-based code editor is being open sourced today by Microsoft. How do I install Microsoft Visual Studio Code on a Debian or Ubuntu or Fedora Linux desktop?
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Visual Studio supports debugging Linux apps and code editor now open source by Microsoft. It is a preview (beta) version but you can test it and use it on your own Linux based desktop.
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### Why use Visual Studio Code? ###
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From the project website:
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> Visual Studio Code provides developers with a new choice of developer tool that combines the simplicity and streamlined experience of a code editor with the best of what developers need for their core code-edit-debug cycle. Visual Studio Code is the first code editor, and first cross-platform development tool - supporting OS X, Linux, and Windows - in the Visual Studio family. If you use Unity, ASP.NET 5, NODE.JS or related tool, give it a try.
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### Requirements for Visual Studio Code on Linux ###
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1. Ubuntu Desktop version 14.04
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1. GLIBCXX version 3.4.15 or later
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1. GLIBC version 2.15 or later
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The following installation instructions are tested on:
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1. Fedora Linux 22 and 23
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1. Debian Linux 8
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1. Ubuntu Linux 14.04 LTS
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### Download Visual Studio Code ###
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Visit [this page][1] to grab the latest version and save it to ~/Downloads/ folder on Linux desktop:
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Fig.01: Download Visual Studio Code For Linux
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Make a new folder (say $HOME/VSCode) and extract VSCode-linux-x64.zip inside that folder or in /usr/local/ folder. Unzip VSCode-linux64.zip to that folder.
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Make a new folder (say $HOME/VSCode) and extract VSCode-linux-x64.zip inside that folder or in /usr/local/ folder. Unzip VSCode-linux64.zip to that folder.
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### Alternate install method ###
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You can use the wget command to download VScode as follows:
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$ wget 'https://az764295.vo.msecnd.net/public/0.10.1-release/VSCode-linux64.zip'
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Sample outputs:
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--2015-11-18 13:55:23-- https://az764295.vo.msecnd.net/public/0.10.1-release/VSCode-linux64.zip
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Resolving az764295.vo.msecnd.net (az764295.vo.msecnd.net)... 93.184.215.200, 2606:2800:11f:179a:1972:2405:35b:459
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Connecting to az764295.vo.msecnd.net (az764295.vo.msecnd.net)|93.184.215.200|:443... connected.
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HTTP request sent, awaiting response... 200 OK
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Length: 64638315 (62M) [application/octet-stream]
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Saving to: 'VSCode-linux64.zip'
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100%[======================================>] 64,638,315 84.9MB/s in 0.7s
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2015-11-18 13:55:23 (84.9 MB/s) - 'VSCode-linux64.zip' saved [64638315/64638315]
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### Install VScode using the command line ###
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Cd to ~/Download/ location, enter:
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$ cd ~/Download/
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$ ls -l
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Sample outputs:
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Fig.02: VSCode downloaded to my ~/Downloads/ folder
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Unzip VSCode-linux64.zip in /usr/local/ directory, enter:
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$ sudo unzip VSCode-linux64.zip -d /usr/local/
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Cd into /usr/local/ to create the soft-link as follows using the ln command for the Code executable. This is useful to run VSCode from the terminal application:
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$ su -
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# cd /usr/local/
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# ls -l
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# cd bin/
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# ln -s ../VSCode-linux-x64/Code code
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# exit
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Sample session:
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Fig.03 Create the sym-link with the absolute path to the Code executable
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### How do I use VSCode on Linux? ###
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Open the Terminal app and type the following command:
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$ /usr/local/bin/code
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Sample outputs:
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Fig.04: VSCode in action on Linux
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And, there you have it, the VSCode installed and working correctly on the latest version of Debian, Ubuntu and Fedora Linux. I suggest that you read [getting started pages from Microsoft][2] to understand the core concepts that will make you more productive writing and navigating your code.
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--------------------------------------------------------------------------------
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via: http://www.cyberciti.biz/faq/debian-ubuntu-fedora-linux-installing-visual-studio-code/
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作者：Vivek Gite
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[1]:https://code.visualstudio.com/Download
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[2]:https://code.visualstudio.com/docs
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83
sources/tech/20151123 LNAV--Ncurses based log file viewer.md
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sources/tech/20151123 LNAV--Ncurses based log file viewer.md
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LNAV – Ncurses based log file viewer
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================================================================================
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The Logfile Navigator, lnav for short, is a curses-based tool for viewing and analyzing log files. The value added by lnav over text viewers / editors is that it takes advantage of any semantic information that can be gleaned from the log file, such as timestamps and log levels. Using this extra semantic information, lnav can do things like: interleaving messages from different files; generate histograms of messages over time; and providing hotkeys for navigating through the file. It is hoped that these features will allow the user to quickly and efficiently zero-in on problems.
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### lnav Features ###
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#### Support for the following log file formats: ####
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Syslog, Apache access log, strace, tcsh history, and generic log files with timestamps. The file format is automatically detected when the file is read in.
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#### Histogram view: ####
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Displays the number of log messages per bucket-of-time. Useful for getting an overview of what was happening over a long period of time.
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#### Filters: ####
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Display only lines that match or do not match a set of regular expressions. Useful for removing extraneous log lines that you are not interested in.
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#### "Live" operation: ####
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Searches are done as you type; new log lines are automatically loaded and searched as they are added; filters apply to lines as they are loaded; and, SQL queries are checked for correctness as you type.
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#### Automatic tailing: ####
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The log file view automatically scrolls down to follow new lines that are added to files. Simply scroll up to lock the view in place and then scroll down to the bottom to resume tailing.
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#### Time-of-day ordering of lines: ####
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The log lines from all the files are loaded and then sorted by time-of-day. Relieves you of having to manually line up log messages from different files.
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#### Syntax highlighting: ####
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Errors and warnings are colored in red and yellow, respectively. Highlights are also applied to: SQL keywords, XML tags, file and line numbers in Java backtraces, and quoted strings.
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#### Navigation: ####
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There are hotkeys for jumping to the next or previous error or warning and moving forward or backward by an amount of time.
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#### Use SQL to query logs: ####
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Each log file line is treated as a row in a database that can be queried using SQL. The columns that are available depend on logs file types being viewed.
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#### Command and search history: ####
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Your previously entered commands and searches are saved so you can access them between sessions.
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#### Compressed files: ####
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Compressed log files are automatically detected and uncompressed on the fly.
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### Install lnav on ubuntu 15.10 ###
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Open the terminal and run the following command
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sudo apt-get install lnav
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### Using lnav ###
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If you want to view logs using lnav you can do using the following command by default it shows syslogs
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lnav
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If you want to view specific logs provide the path
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If you want to view CUPS logs run the following command from your terminal
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lnav /var/log/cups
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--------------------------------------------------------------------------------
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via: http://www.ubuntugeek.com/lnav-ncurses-based-log-file-viewer.html
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作者：[ruchi][a]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]:http://www.ubuntugeek.com/author/ubuntufix
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