ls spell: list --- display the current directory
ls -a a:all --- show all, specifically query all hidden files
ls -l l:long --- Display detailed file information
ls -d d: direct --- Display directory information
ls -i --- Display the user's node information (equivalent to the ID of the ID card)
u: user --- user
g:group --- user group
o:other ---Other
rwx --- read and write execution
Note: The following is a detailed description of the specific meaning of each parameter:
The first root: the owner, whoever created it, can only have one owner, and the owner can change
The second root: belongs to the group, there is only one group, and members of all groups can use it
is neither the owner nor the group it belongs to or something else
1205: refers to the size of the file, in KB
No created time, last modified time in LINUX
The last indication is the name of the file
The specific meaning of -rw------- is:
rw- : owner's permissions
---: Permissions of the group to which it belongs
---: permissions for others