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A Practical Guide to Red Hat® Linux® 8 by Mark G. Sobell

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Processes

A process is the execution of a command by GNU/Linux. The shell that starts up when you log in is a command , or a process, like any other. Whenever you give the name of a GNU/Linux utility on the command line, you initiate a process. When you run a shell script, another shell process is started, and additional processes are created for each command in the script. Depending on how you invoke the shell script, the script is run either by a new shell or by a subshell of the current shell. A process is not started when you run a shell builtin, such as cd , from the command line or within a script. The information in this section pertains ...

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