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In computing, command substitution is a facility that allows a command to be run and its output to be pasted back on the command line as arguments to another command. Command substitution first appeared in the Bourne shell , [ 1 ] introduced with Version 7 Unix in 1979, and has remained a characteristic of all later Unix shells .
PowerShell is a task automation and configuration management program from Microsoft, consisting of a command-line shell and the associated scripting language.Initially a Windows component only, known as Windows PowerShell, it was made open-source and cross-platform on August 18, 2016, with the introduction of PowerShell Core. [5]
The redirection and piping tokens can be chained together to create complex commands. For example, sort infile | uniq-c | sort-n > outfile sorts the lines of infile in lexicographical order, writes unique lines prefixed by the number of occurrences, sorts the resultant output numerically, and places the final output in outfile. [7]
Example usage of tee: The output of ls -l is redirected to tee which copies them to the file file.txt and to the pager less. The name tee comes from this scheme - it looks like the capital letter T. The tee command is normally used to split the output of a program so that it can be both displayed and saved in a file. The command can be used to ...
Cook on medium heat in 30-second increments, being sure to flip the steak each time, until it is warmed through. Related: The Proper Way To Season A Steak. Caitlin Bensel; Food Stylist: Torie Cox.
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Arkansas legend has it that the name of the pie derives from the term "playing possum" because all the layers of its ingredients are hidden beneath the whipped cream. For more Lifestyle articles ...
Smooth, creamy, fluffy mashed potatoes are one of the favorite ingredients of many Thanksgiving dinners. In fact, some people have described mashed potato as the glue that knits the Thanksgiving ...