Before a command is executed, its input and output may be redirected using a special notation interpreted by the shell. Redirection allows commands’ file handles to be duplicated, opened, closed, made to refer…
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Bash is the standard shell on most Linux distributions. However, there are other Linux shells available and there’s no requirement that Bash should be present on any particular distribution. The Bash shell is open source…
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A shell is a program that runs operating system commands. Bash has more than 50 predefined variables.These variables, created when Bash is first started, provide information about the Bash session and can be used…
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