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Bash wait Command

wait is a command that waits for the given jobs to complete and returns the exit status of the waited for command. Since the wait command affects the current shell execution environment, it is implemented as a built-in command in most shells. In this article, we’ll explore the Bash built-in wait command. Bash wait Command

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Find and Replace in Vim / Vi

This article describes how to find and replace text in Vim / Vi. Vim is the most popular command-line text editor. It comes preinstalled on macOS and most Linux distributions. Finding and replacing text in Vim is quick and easy. Basic Find and Replace # In Vim, you can find and replace text using the

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Bash: Write to File

One of the most common tasks when writing Bash scripts or working on the Linux command line is reading and writing files. This article explains how to write text to a file in Bash, using the redirection operators and tee command. Writing to a File using Redirection Operators # In Bash, the redirection of output

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Bash read Command

Bash ships with a number of built-in commands that you can use on the command line or in your shell scripts. In this article, we’ll explore the built-in read command. Bash read Built-in # read is a bash built-in command that reads a line from the standard input (or from the file descriptor) and split

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Listing Linux Services with Systemctl

In Linux, a service is a program that runs in the background . Services can be started on-demand or at the boot time. If you are using Linux as your primary operating system or development, platform you will deal with different services such as webserver, ssh or, cron . Knowing how to list running services

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Dec 18 2020
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How to Use sed to Find and Replace String in Files

When working with text files, you’ll often need to find and replace strings of text in one or more files. The sed is a stream editor. It is used to search, find and replace, insert and delete words and lines. You also can use the regular expressions. In this article we will show you how

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How to Use the nmap Command

Nmap is a powerful network scanning tool for security audits and penetration testing. It is one of the essential tools used by network administrators to troubleshooting network connectivity issues and port scanning . Nmap can also detect the Mac address, OS type , service version, and much more. This article explains the basics of how

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Dec 15 2020
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Linux Head Command

The head command is used to print the few first lines (by default 10 lines) of file or standard output. This tutorial shows you how to use the Linux head command with practical examples. Head Command Syntax# Below is the basic syntax for the head command: head [OPTION]… [FILE]… Here, OPTION – You can pass

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Dec 15 2020
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How to Rename Files and Directories in Linux

It’s a basic requirement to rename the files and directories on a Linux system. There are two ways to rename files using command-line terminal or via GUI file manager. In this tutorial, we will cover how to rename files and directories using mv and rename commands. Rename Files using mv Command# The mv command is

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Dec 13 2020
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Linux Time Command

Time command is useful when you want to determine the command execution time. Generally, it’s useful to test the performance of the commands and scripts. In this guide, we will cover how to use the time command in Linux. When you are writing multiple script which doing same job and want to choose better one

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