customizing commands with the alias alias

Usually in the development of the use of a number of command lines, in order to save time (lazy), the following describes the use of alias Mac/linux under the common commands. Alias View all command aliases Unalias aliases remove aliases alias ll= ' ls-l ' ll total 24
-rwxr-xr-x 1 Cicilover staff 6 2016 directhello.py
-rw-r--r--1 Cicilover staff 6 2016 input&output.py
Drwxr-xr-x 3 Cicilover Staff 102 8 00:36 Pythontokaggle
-rw-r--r--1 Cicilover Staff 703 3 00:18 tkinter.py alias alias Ll= ' Ls-l '
Alias mv= ' mv-i ' Alias rm= ' rm-i ' Alias cp= ' cp-i ' provides a dialog that prompts you to do some high-risk actions when you modify the default command, and you can also customize the commonly used commands by using aliases.
This method, which is set with the command line, does not take effect after the reboot. Vim ~/.BASHRC writes the corresponding alias, it can be applied permanently. The other file is readonly input: Set NOREADONLY+:WQ or: wq! save
After saving the file, run: source ~/.BASHRC
If not, the description does not ~/.bash_profile or the file does not execute ~/.BASHRC open the file, add one line: Source ~/.BASHRC

Order in which the order is in effect: 1. Execute an absolute or relative path 2. Execute alias 3. Execute bash's internal command 4. Executes the first command found in the directory lookup order defined by the $PATH environment variable