Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Unix Articles
Page 5 of 6
User-Space Debugging Tools for Linux
The userspace is the area or space where all the applications executed by the user are located, such as the terminal, web browser, text editor, etc. In simple terms, the userspace is an area with resources for user processes to run. This space has limited access to the hardware, a separate memory, and user privileges. It has its own components, such as: Shell − The command-line interface. User Libraries − Provide the interface for system calls. Daemons − Background processes. Utilities and Tools − Tools like grep and vim, which run inside the userspace. Applications running in the ...
Read MoreHow to Use Comments in Bash Scripts?
Bash script is a language that has multiple functionalities and capabilities, and as a programmer, keeping track of and remembering all the language syntax, especially if it's not your day-to-day language, is hard. For this purpose, we use comments, which allow us to simplify and demonstrate what a part of the code does. Writing comments is not necessary or obligatory, but it's a good practice, and here's why we use comments in code − Remember the code − Sometimes you write code and forget it for some time. When you come back, you might not remember why you wrote ...
Read MoreHow to Install Redmine on Ubuntu?
Redmine is one of the best free and open-source project management tools, written using Ruby on Rails. Its customizable nature makes it an excellent choice for managing and tracking bugs in projects. The term "project management" refers to a broad process with different stages and phases, ranging from planning and organizing to executing. Having a system to track all this can bring significant improvements. Redmine has many features that make it popular and distinct from other project management tools. In addition to being free and open-source, Redmine offers functionalities such as − Issue Tracking − ...
Read MoreHow to Copy and Paste in Vim?
Linux has a suite of software and tools that Linux users and administrators use to develop or manage the operating system. One of the most commonly used tools is Vim. Vim is a popular text editor, or even an IDE, that can be used for everything from editing text to developing software to simple tasks like editing a script. It’s easy to use, but it requires some time to learn and remember all the commands and how to switch between different aspects and modes. One of the most essential functionalities for beginners using Vim is copying and pasting. At first, ...
Read MoreRun Sudo Command without Password
The sudo command in Linux / Unix based systems allows a trusted user to execute a command with extended privileges, either as superuser (root) or as another user defined in the security policy. The security policy determines the privileges assigned to a user as well. It may require that the users should authenticate themselves with a password or another authentication mechanism. If a password is required, the user will be prompted to enter its account's password, with a timeout period. Else, the specified command is executed as per security policy, without any prompts. There are cases where one needs to ...
Read MoreDifference between Korn Shell and Bash Shell
David Korn developed the Korn Shell command which is used by developers to create new shell commands. Freeware Software developed Bash Shell which is a free and open-source script and can be used by computer users. In this article, we will discuss the difference between the Korn shell and the Bash shell. Korn Shell Korn shell is a command for Unix operating system and David Korn has developed it under Bell Labs. A shell program is a command which runs different types of scripts by interfacing with the operating system. Korn shell is a script that can run on different ...
Read MoreDifference between IBM and SCO
The dispute between IBM and SCO began in March 2003, when SCO Group, a Utah-based firm, filed a lawsuit against IBM, claiming that IBM had broken the license agreement for AIX (IBM's in-house version of Unix) that it had signed with AT&T and that SCO now controlled. By offering AIX to other companies, SCO Group said IBM was in breach of contract. More than a billion dollars were sought in damages for the complaint, which also alleged illegal competition and a violation of the contract. Just two months after filing suit, SCO claimed to have found more UNIX code ...
Read MoreIs there any whoami function or command in MySQL like UNIX?
There is no whoami function in MySQL. The whoami can be used to know the current user in UNIX. Use user() or current_user() function from MySQL for the same purpose.The following is the output.+-----------+ | version() | +-----------+ | 8.0.12 | +-----------+ 1 row in set (0.00 sec)Case 1 −Using CURRENT_USER() function.The query to know the current user is as follows.mysql> select current_user();The following is the output.+----------------+ | current_user() | +----------------+ | root@% | +----------------+ 1 row in set (0.00 sec)Case 2 − Using USER() function.The query is as follows −mysql> select user();The following is ...
Read MoreWhat are Shell Commands?
The shell is the command interpreter on the Linux systems. It the program that interacts with the users in the terminal emulation window. Shell commands are instructions that instruct the system to do some action.Some of the commonly used shell commands are −basenameThis command strips the directory and suffix from filenames. It prints the name of the file with all the leading directory components removed. It also removes a trailing suffix if it is specified.Example of basename is as follows −$ basename country/city.txtThis gets the name of the file i.e. city which is present in folder country.city.txtcatThis command concatenates and ...
Read MoreHow to call RFC in SAP using an ETL job?
You need to expose RFC as Web Service in SAP system. To create a Web Service, you have to open Transaction SE80 and this will open ABAP Workbench.You can define Web Service for −RFC Capable function modulesFunction GroupsBAPIsMessage InterfacesIn Web Service Wizard, enter the name and short text and select Function Module as Endpoint TypeWhen you navigate to configure service, you need to select SOAP profile from drop down as below −
Read More