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Sends an EOF marker, which (unless disabled by an option) closes the current shell (equivalent to the command exit). (Only if there is no text on the current line) If there is text on the current line, deletes the current character (then equivalent to the key Delete). Ctrl+e : moves the cursor to the line end (equivalent to the key End).
Commands with long or difficult to spell filenames can be entered by typing the first few characters and pressing a completion key, which completes the command or filename. In the case of multiple possible completions, some command-line interpreters, especially Unix shells, will list all possible completions beginning with those few characters.
Command-line completion in Bash. Completion features assist the user in typing commands at the command line, by looking for and suggesting matching words for incomplete ones. Completion is generally requested by pressing the completion key (often the Tab ↹ key). Command name completion is the completion of
COMMAND. ACTION. Ctrl/⌘ + C. Select/highlight the text you want to copy, and then press this key combo. Ctrl/⌘ + F. Opens a search box to find a specific word, phrase, or figure on the page
This feature maintained a history of the previously executed commands and allowed the user to review and easily select previous commands to execute. For example, typing the command history would show the previously executed commands. The up and down arrow keys could be used to select a command, or the previous command could be executed using !!.
The command ls -l is executed as a process, the output (stdout) of which is piped to the input (stdin) of the process for grep key; and likewise for the process for less. Each process takes input from the previous process and produces output for the next process via standard streams .
Whether or not CPU 2 was trying to access the memory location, the DPRAM performs the test given by CPU 1. If the test succeeds, the DPRAM sets the memory location to the value given by CPU 1. Then the DPRAM wipes out its "internal note" that CPU 1 was writing there. At this point, CPU 2 could issue a test-and-set, which would succeed.
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