Chapter One Introduction to the Linux command line
1.1 Linux Command-Line Overview
1.1.1 Linux command line to open and exit
On: login account password to enter the system
Exit: exit / logout shortcut: Ctrl + d
1.1.2 Linux command line prompt introduction
(1) controlled by the prompt PS1 environment variable. Example code:
[root@centos102 ~]# set | grep PS1
PS1 = '[\ u @ \ h \ W] \ $'
Here PS1 = '[\ u @ \ h \ W] \ $', can be configured by global file / etc / bashrc or / etc / profile adjustment and on-demand configuration.
1.1.3 Linux command line frequently used shortcuts
| hot key | Function (* commonly used) |
| The most commonly used shortcuts | |
| tab | Commands or path completion bond, linux most commonly used shortcuts * |
| Move the cursor shortcuts | |
| Ctrl+a | Move the cursor to the command line head * |
| Ctrl+e | Move the cursor to the end of the command line * |
| Ctrl+f | The cursor moves one character (corresponding to the right direction key) |
| Ctrl+b | The cursor one character to the left (corresponding to the left direction key) |
| Cut, paste, clear shortcuts | |
| Ctrl+Insert | Copy the contents of the command line * (xshell can adjust, such as Ctrl + C) |
| Shirt+Insert | Paste command line contents * (xshell can adjust, such as Ctrl + P) |
| Ctrl+k | Cut (Delete) the cursor to the end of the line * |
| Ctrl+u | Cut (delete) the cursor to the beginning of the line * |
| Ctrl+w | Cut (delete) a word before the cursor |
| Ctrl+y | Paste Ctrl + k / Ctrl + u / Ctrl + w text cut |
| Ctrl+c | Terminal interrupt task is being executed or delete the entire line * (xshell can adjust, such as Ctrl + x) |
| Ctrl+h | Delete at the cursor before a character (the equivalent of the backspace key) |
| Repeat command shortcuts | |
| Ctrl+d | Exit the current shell command line * |
| Ctrl+r | Search command used to exercise command history records * |
| Ctrl+g | Exit from the execution history search Ctrl + r in command mode |
| Control shortcuts | |
| Ctrl+l | Clear screen all content, and start a new line at the top of the screen, is equivalent to the clear command * |
| Ctrl+s | Lock the terminal so that it can not enter content |
| Ctrl+q | Ctrl + s to perform unlock the lock status |
| Ctrl+z | Suspended from their duties in the operation of the terminal * |
| ! The beginning of the number shortcuts | |
| !! | Executing a command |
| ! pw | Execute the most recent command beginning with pw * |
| !pw:p | Print only the beginning of the ps command recently, but does not perform |
| !on one | The execution history list of commands first num (digital) command * |
| !$ | The last parameter on a command, corresponding to Esc +. (Point) |
| ESC-related | |
| Esc+. | Get the last part of a command (separated by spaces) * |
| Esc+b | Move to the beginning of the current word |
| Esc+f | Moves to the end of the current word |
1.2 In order to view the Linux command line help