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The Unix command clear takes no arguments and is roughly analogous to the command cls on a number of other operating systems. In ISO 9995-7 specifies that the following symbol be used to indicate this function on a keyboard, which is included in Unicode as: ⎚ CLEAR SCREEN SYMBOL. [2] One may use the reset command to erase every previous command.
Ctrl+l : Clears the screen content (equivalent to the command clear). Ctrl+n : recalls the next command (equivalent to the key ↓). Ctrl+o : Executes the found command from history, and fetch the next line relative to the current line from the history for editing. Ctrl+p : recalls the prior command (equivalent to the key ↑).
The cursor keys are used to navigate up and down through the history list and left or right to anyplace on the line, where the user can simply type a desired change. But some implementations are menu -based: The user presses a certain function key which displays a menu of recent commands, which the user can select one by typing a number.
Most keyboard shortcuts require the user to press a single key or a sequence of keys one after the other. Other keyboard shortcuts require pressing and holding several keys simultaneously (indicated in the tables below by the + sign). Keyboard shortcuts may depend on the keyboard layout.
The history command works with the command history list. When the command is issued with no options, it prints the history list. Users can supply options and arguments to the command to manipulate the display of the history list and its entries. The operation of the history command can also be influenced by a shell's environment variables. For ...
Run command with specified security context seq: Prints a sequence of numbers sleep: Delays for a specified amount of time stat: Returns data about an inode: stdbuf: Controls buffering for commands that use stdio stty: Changes and prints terminal line settings tee: Sends output to multiple files test: Evaluates an expression timeout: Run a ...
Streamlined FTP Command Extensions: Get the available space CCC RFC 2228 Clear Command Channel CDUP RFC 959 Change to Parent Directory. CONF RFC 2228 Confidentiality Protection Command CSID Streamlined FTP Command Extensions: Client / Server Identification CWD RFC 697 Change working directory. DELE RFC 959 Delete file. DSIZ
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 !!.