"Linux" LS and ll Difference

LL is a pre-defined nickname (alias). An alias is a name that gives a command or a list of commands. You can use aliases as synonyms for abbreviations.
On my Ubuntu system, there is such a statement in the ~/.BASHRC file as alias ll= ' Ls-alf ', which means ll is the abbreviation for ' Ls-alf '. You can enter the following command under the shell:alias ll, you know what the ll on your system represents. In addition, you can modify this alias.
PS: ' Ls-alf ',-a means that all files are displayed,-L is displayed in long format, and-F is appended with a character after each file name to clarify the type of file.

"Linux" LS and ll Difference