Dash command

IntroductionIf you are familiar with command line interface, you have probably encountered a double-dash (--) in some of commands you use. This article seeks to explain what double-dash means and how it affects behavior of shell commands.What is a Double-Dash in Shell Commands?A double-dash is a syntax used in shell commands to signify end of command options and beginning of positional arguments. In other words, it separates command options from arguments that command operates on.Many shell commands allow you to specify options or flags that modify behavior of command. For example, ls command allows you to specify options such as -l to display files in long format or -a to show hidden files. When you use these options, command will interpret them and modify its behavior accordingly.However, there are instances where options themselves can conflict with arguments you want to pass to command. For example, suppose you want to create a file with name "-l". If you were to run touch command with argument "-l", command would interpret it as an option to show file details in long format, rather than a file name.This is where double-dash comes in. By adding a double-dash before your arguments, you can ensure that they are interpreted as positional arguments rather than options.Examples of Double-Dash in Shell CommandsTo better understand how double-dash works, let us look at some examples of its usage in different commands.ls CommandThe ls command is used to list contents of a directory. By default, it lists only names of files and directories, but you can specify options to modify its behavior.For example, suppose you have a directory named "my_folder" containing two files, "file1.txt" and "file2.txt". To list files in long format and show hidden files, you would use following command −ls -al my_folderThe output would be as follows −-rw-r--r-- 1 user user 0 Jun 20 10:44 .hidden_file -rw-r--r-- 1 user user 0 Jun 20 10:43 file1.txt -rw-r--r-- 1 user user 0 Jun 20 10:43 file2.txtNow suppose you want to create a file with name "-l" in same directory. If you were to use following command −touch -l my_folderThe touch command would interpret "-l" as an option to modify its behavior, rather than a file name. To avoid this, you can use double-dash as follows −touch -- -l my_folderThis tells touch command that "-l" is a positional argument rather than an option.Git CommandGit is a version control system that is commonly used in software development. It has many commands and options that allow you to manage your codebase.One of most commonly used git commands is "git checkout", which allows you to switch between branches or restore files to a previous version.Suppose you have a git repository with two branches, "main" and "feature". To switch to "feature" branch, you would use following command −git checkout featureThis would switch your working directory to "feature" branch.Now suppose you want to create a branch with name "-f". If you were to use following command −git branch -fThe git branch command would interpret "-f" as an

Option to force creation of a new branch, rather than a branch name. To avoid this, you can use double-dash as follows −git branch -- -fThis tells git that "-f" is a positional argument rather than an option.ffmpeg Commandffmpeg is a powerful tool for manipulating and converting audio and video files. It has many options that allow you to modify output format and quality of files.Suppose you have a video file named "input.mp4" that you want to convert to an audio file in MP3 format. To do this, you would use following command −ffmpeg -i input.mp4 output.mp3This would convert input video file to an MP3 audio file named "output.mp3".Now suppose you want to convert a video file with name "-i". If you were to use following command −ffmpeg -i -i.mp4 output.mp3The ffmpeg command would interpret "-i" as an option to specify input file, rather than a file name. To avoid this, you can use double-dash as follows −ffmpeg -- -i.mp4 output.mp3This tells ffmpeg that "-i.mp4" is a positional argument rather than an option.Why Use Double-Dash in Shell Commands?As we saw in examples above, using a double-dash in shell commands is important to avoid conflicts between command options and positional arguments. Without it, command may interpret an argument as an option and modify its behavior in unintended ways.In addition, using a double-dash can improve readability and maintainability of your command line code. By clearly separating options from arguments, it makes it easier for other users to understand what your command is doing and to modify it if necessary.Using Double-Dash in Complex CommandsIn some cases, you may need to use multiple options and positional arguments in a single command. In such cases, you can use multiple double-dashes to separate different groups of arguments.For example, suppose you have a script that accepts multiple options and arguments to perform a complex operation. You could use following syntax to clearly separate different groups of arguments −./script --option1 --option2 -- --arg1 arg2 arg3In this case, double-dash after options signals end of option group, and subsequent double-dash separates positional arguments from options.ConclusionIn summary, a double-dash is a syntax used in shell commands to signify end of command options and beginning of positional arguments. It ensures that arguments are interpreted as positional rather than as options. examples provided in this article show how double-dash is used in different commands to avoid conflicts between options and arguments. Understanding how double-dash works is important for anyone who works with command line interfaces. Related ArticlesWhat are Shell Commands?What does the Double Star operator mean in Python?What does double question mark (??) operator mean in PHP ?Linux Commands Using Secure Shell (ssh)What does '//' mean in python?What does “!” mean in Java?What does * { mean in HTML?What does psychology mean?What does geometry mean?What does humus mean?What does “?:” mean in a Python regular expression?What does createdCollectionAutomatically mean in MongoDB?What does # mean in Lua programming?What does operator ~= mean in Lua?What does series mean in pandas? Kickstart Your Career Get certified

Provided by: dash_0.5.10.2-6_amd64 NAME dash — command interpreter (shell)SYNOPSIS dash [-aCefnuvxIimqVEbp] [+aCefnuvxIimqVEbp] [-o option_name] [+o option_name] [command_file [argument ...]] dash -c [-aCefnuvxIimqVEbp] [+aCefnuvxIimqVEbp] [-o option_name] [+o option_name] command_string [command_name [argument ...]] dash -s [-aCefnuvxIimqVEbp] [+aCefnuvxIimqVEbp] [-o option_name] [+o option_name] [argument ...]DESCRIPTION dash is the standard command interpreter for the system. The current version of dash is in the process of being changed to conform with the POSIX 1003.2 and 1003.2a specifications for the shell. This version has many features which make it appear similar in some respects to the Korn shell, but it is not a Korn shell clone (see ksh(1)). Only features designated by POSIX, plus a few Berkeley extensions, are being incorporated into this shell. This man page is not intended to be a tutorial or a complete specification of the shell. Overview The shell is a command that reads lines from either a file or the terminal, interprets them, and generally executes other commands. It is the program that is running when a user logs into the system (although a user can select a different shell with the chsh(1) command). The shell implements a language that has flow control constructs, a macro facility that provides a variety of features in addition to data storage, along with built in history and line editing capabilities. It incorporates many features to aid interactive use and has the advantage that the interpretative language is common to both interactive and non-interactive use (shell scripts). That is, commands can be typed directly to the running shell or can be put into a file and the file can be executed directly by the shell. Invocation If no args are present and if the standard input of the shell is connected to a terminal (or if the -i flag is set), and the -c option is not present, the shell is considered an interactive shell. An interactive shell generally prompts before each command and handles programming and command errors differently (as described below). When first starting, the shell inspects argument 0, and if it begins with a dash ‘-’, the shell is also considered a login shell. This is normally done automatically by the system when the user first logs in. A login shell first reads commands from the files /etc/profile and .profile if they exist. If the environment variable ENV is set on entry to an interactive shell, or is set in the .profile of a login shell, the shell next reads commands from the file named in ENV. Therefore, a user should place commands that are to be executed only at login time in the .profile file, and commands that are executed for every interactive shell inside the ENV file. To set the

Top of the results. It has a blue icon with an image that resembles a white rotary piston. Click the app icon to display the information page. This will install the latest release of the official Steam app on your Ubuntu Linux computer. In order to install new software in Ubuntu, you must enter your user password. Enter the password for your Ubuntu login and click Authenticate. This will install the Steam for Ubuntu. When you launch Steam, it may need to be updated. Once the update is completed, you can sign in to your Steam account. Advertisement On most Linux distros, you can open the Terminal by pressing Ctrl + Alt + T to open the Terminal. Alternatively, you can press the Super (Windows or Command) key (or click the Dash icon) to open the Dash and type Terminal in the search bar. This method works on RPM-based Linux distros like Fedora. This command will add the required repository for installation.If you're prompted, enter your Ubuntu user password and press Enter to proceed. This will update the repository with the latest version. This will install Steam from the default Ubuntu repositories. You can launch the Steam app on your computer after your installation is finished.[2]If you are asked if you want to continue with the installation, press "Y" and then press "Enter".Advertisement On most Linux distros, you can open the Terminal by pressing Ctrl + Alt + T to open the Terminal. Alternatively, you can press the Super (Windows or Command) key (or click the Dash icon) to open the Dash and type Terminal in the search bar.RPM-based Linux distributions include Fedora, CentOS, OpenSUSE, Red Hat Linux, and more. This updates the dnf repositories on your system. This ensures your system is up to date. It may take a while depending on how often you update your system. To restart your computer, either click the power icon on your computer and click Restart or open the Terminal and type "sudo reboot" and press Enter. Once your computer restarts, open the Terminal once again. The following command will configure RPM

Identifiers in client commands Case-sensitivity rules for client commands Options common to client commands The sections in this chapter describe commands used in the MySQL Cluster Manager 8.0.41 client for tasks such as defining sites, packages, and MySQL NDB Cluster instances (“clusters”); configuring a MySQL NDB Cluster; and getting the status of a running MySQL NDB Cluster. These commands are issued to the management agent using the mysql client program included with the MySQL NDB Cluster distribution (for information about the mysql client not specific to using MySQL Cluster Manager, see mysql — The MySQL Command-Line Client). Each MySQL Cluster Manager client command takes the form shown here: instruction [options] [arguments]options: option [option] [...]option: --option-long-name[=value-list] | -option-short-name [value-list]value-list: value[,value[,...]]arguments: argument [argument] [...] Consider the following MySQL Cluster Manager command, which starts a MySQL NDB Cluster named mycluster and backgrounds the deletion process so that the client can be used to execute other commands in the meantime, without having to wait on the start cluster command to complete: start cluster --background mycluster; In this example, the command contains a start cluster instruction. An instruction consists of one or two keywords, such as set, or show status. This instruction is modified by the --background option that follows it; however, this option assigns no values. Most command options have short forms, consisting of single letters, in addition to their long forms. Using the short form of the --background option, the previous example could also be written like this: start cluster -B mycluster; The long form of an option must be preceded by a double dash (--), and is not case-sensitive (lower case being the canonical form). The short form of an option must be preceded by a single dash (-), and is case-sensitive. In either case, the dash character or characters must come immediately before the option name, and there must be no space characters between them. Otherwise, the MySQL Cluster Manager client cannot parse the command correctly. More information about long and short forms of options is given later in this section.Important Do not confuse options given to MySQL Cluster Manager client commands with mysql client options. A MySQL Cluster Manager client command option is always employed as part of a MySQL Cluster Manager client command; it is not passed to the mysql client when invoking it. In addition, you cannot issue queries or other SQL statements in the MySQL Cluster Manager

Creating build\lib.win-amd64-3.7\shap\plots copying shap\plots\bar.py -> build\lib.win-amd64-3.7\shap\plots copying shap\plots\colorconv.py -> build\lib.win-amd64-3.7\shap\plots copying shap\plots\colors.py -> build\lib.win-amd64-3.7\shap\plots copying shap\plots\decision.py -> build\lib.win-amd64-3.7\shap\plots copying shap\plots\dependence.py -> build\lib.win-amd64-3.7\shap\plots copying shap\plots\embedding.py -> build\lib.win-amd64-3.7\shap\plots copying shap\plots\force.py -> build\lib.win-amd64-3.7\shap\plots copying shap\plots\force_matplotlib.py -> build\lib.win-amd64-3.7\shap\plots copying shap\plots\image.py -> build\lib.win-amd64-3.7\shap\plots copying shap\plots\monitoring.py -> build\lib.win-amd64-3.7\shap\plots copying shap\plots\partial_dependence.py -> build\lib.win-amd64-3.7\shap\plots copying shap\plots\summary.py -> build\lib.win-amd64-3.7\shap\plots copying shap\plots\text.py -> build\lib.win-amd64-3.7\shap\plots copying shap\plots\waterfall.py -> build\lib.win-amd64-3.7\shap\plots copying shap\plots\__init__.py -> build\lib.win-amd64-3.7\shap\plots creating build\lib.win-amd64-3.7\shap\benchmark copying shap\benchmark\experiments.py -> build\lib.win-amd64-3.7\shap\benchmark copying shap\benchmark\measures.py -> build\lib.win-amd64-3.7\shap\benchmark copying shap\benchmark\methods.py -> build\lib.win-amd64-3.7\shap\benchmark copying shap\benchmark\metrics.py -> build\lib.win-amd64-3.7\shap\benchmark copying shap\benchmark\models.py -> build\lib.win-amd64-3.7\shap\benchmark copying shap\benchmark\plots.py -> build\lib.win-amd64-3.7\shap\benchmark copying shap\benchmark\__init__.py -> build\lib.win-amd64-3.7\shap\benchmark creating build\lib.win-amd64-3.7\shap\plots\resources copying shap\plots\resources\bundle.js -> build\lib.win-amd64-3.7\shap\plots\resources copying shap\plots\resources\logoSmallGray.png -> build\lib.win-amd64-3.7\shap\plots\resources copying shap\tree_shap.h -> build\lib.win-amd64-3.7\shap running build_ext numpy.get_include() C:\Users\charleswm\AppData\Local\Continuum\miniconda3\envs\interpret-demo\lib\site-packages\numpy\core\include building 'shap._cext' extension error: Microsoft Visual C++ 14.0 is required. Get it with "Build Tools for Visual Studio": ----------------------------------------ERROR: Command errored out with exit status 1: 'C:\Users\charleswm\AppData\Local\Continuum\miniconda3\envs\interpret-demo\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\charleswm\\AppData\\Local\\Temp\\pip-install-osv0fkp_\\shap\\setup.py'"'"'; __file__='"'"'C:\\Users\\charleswm\\AppData\\Local\\Temp\\pip-install-osv0fkp_\\shap\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\charleswm\AppData\Local\Temp\pip-record-er9n9syn\install-record.txt' --single-version-externally-managed --compile --install-headers 'C:\Users\charleswm\AppData\Local\Continuum\miniconda3\envs\interpret-demo\Include\shap' Check the logs for full command output.">Failed to build shapInstalling collected packages: greenlet, zope.event, zope.interface, pycparser, cffi, gevent, dash-table, click, itsdangerous, Werkzeug, Flask, brotli, flask-compress, retrying, plotly, dash-renderer, dash-core-components, dash-html-components, future, dash, dash-cytoscape, urllib3, chardet, idna, requests, psutil, joblib, cycler, kiwisolver, pyparsing, matplotlib, scipy, tqdm, pillow, threadpoolctl, scikit-learn, imageio, PyWavelets, tifffile, networkx, scikit-image, lime, SALib, dill, shap, treeinterpreter, interpret-core, interpret Running setup.py install for shap ... error ERROR: Command errored out with exit status 1: command: 'C:\Users\charleswm\AppData\Local\Continuum\miniconda3\envs\interpret-demo\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\charleswm\\AppData\\Local\\Temp\\pip-install-osv0fkp_\\shap\\setup.py'"'"'; __file__='"'"'C:\\Users\\charleswm\\AppData\\Local\\Temp\\pip-install-osv0fkp_\\shap\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__,