7.linux File and directory management

7.linux File and directory management

I. Paths and directories

1.1 Relative path and absolute path:

Relative path: Relative to the current directory's path

Absolute path: The path relative to/

1.2 Show current path and toggle current path

PWD Displays the absolute path of the current file

Cd. , .. ,-, ~ command use, CD/,cd/opt

1.3 Creating directories, renaming directories, deleting directories

mkdir Create directory, mkdir hzc0902, Mkdir–p hzc0902/test1/test2

MV Rename path mv hzc0902 hzc090201

RmDir Delete directory rmdir hzc0902, delete only non-empty directories

1.4 Environment Variables: View environment variables: Echo $PATH, add environment variable: path= "$PATH":/root

Delete environment variable I don't know yet.

Ii. Document and Directory Management

1.1 Viewing files and directories: LS

1.2 Copy, delete and move: CP, RM, MV

Third, data content access: Cat, TAC, NL, more, less, head, tail, OD, file creation: Touch

Iv. default permissions and hidden permissions for files and directories

1. Umask Show Default Create Permissions
2. File View Files Type

Five, command and file query

1. which
2. Whereis, locate, find

7.linux File and directory management