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[3] Bash programmable completion, complete and compgen commands [4] have been available since the beta version of 2.04 [3] in 2000 [5] and offers at least Pathname and filename completion. For KornShell users, file name completion depends on the value of the EDITOR variable. If EDITOR is set to vi, you type part of the name, and then Escape, \.
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 here document syntax is analogous to the shell syntax for input redirection, which is < followed by the name of the file to be used as input. Other languages often use substantially similar syntax, but details of syntax and actual functionality can vary significantly.
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In computing, tee is a command in command-line interpreters using standard streams which reads standard input and writes it to both standard output and one or more files, effectively duplicating its input. [1] It is primarily used in conjunction with pipes and filters. The command is named after the T-splitter used in plumbing. [2]
Process substitution can also be used to capture output that would normally go to a file, and redirect it to the input of a process. The Bash syntax for writing to a process is >(command). Here is an example using the tee, wc and gzip commands that counts the lines in a file with wc -l and compresses it with gzip in one pass:
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