ls is a command that everyone will use when they come into contact with the Linux system. Today, I will bring you back to the basic usage of ls
ls basic usage
effect
The role of the ls command is to list the contents of the directory
usage
ls [options] [filename...]
View multiple files or folders
ls /dev/ /boot
view file details
ls -l If no parameters are added, the default refers to viewing the contents of the current directory
ls -l
| -rw-r–r– |
file type and permissions |
| 1 |
number of hard links |
| root root |
Belonging user and user group |
| 0 |
size |
| July 7 23:17 |
Last Modified |
| myfile.txt |
file name |
View hidden files or hidden folders
Everyone knows that under Windows, hidden files and hidden folders are set through the system, but under Linux, hiding files is relatively simple, as long as the file or folder is named, start with a dot, as shown in the example below The ".abc" in the default ls is not displayed
ls -a
After ls -a, you can see three more files
| . |
current directory (in every folder) |
| .. |
parent directory (in each folder) |
| .abc |
Hidden files set by yourself |
Because there are two folders. and .. in all files, if you want to ignore them when you want to view them, you can use the ls -A command to ignore these two folders
ls -A
Sort the files
Default sort display
By default, when ls views files, they are sorted by file name
Display commands in reverse order
ls -r
From the comparison of the results of the above two executions, it can be seen that the difference between the file sorting of ls -r and the execution result of ls has changed according to the display order of the file names
Show in chronological order
Sort by most recently updated files first
ls -t
Show in reverse chronological order
Sort in reverse order by most recently updated file
ls -rt
sort by file size
Sort by big files first
ls -S
Reverse sort by file size
small files first
ls -Sr
Recursively list the contents of subdirectories
Sometimes you need to view the contents of all files, at this time the following command comes in handy, it will display the contents of all folders
ls -R
friendly display file size
It is usually used together with -l, so that the displayed file size is more readable, and the difference between the two can be seen in the figure below
ls -lh
The above are some common usages of ls in daily life, which can meet the basic needs in daily use. If you want to know more, you can execute man ls, which contains more parameters.
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