Linux Files, document operation commands (1), linux commands

Linux Files, document operation commands (1), linux commands

Open a directory (enter this directory): cd [path]

Create document: mkdir [file name]

Delete a directory (only empty directories are allowed. to delete the entire directory, You need to delete it one by one): rmdir

Create an empty file: touch [file name]

View files and directories: ls

Modify the document owner: chown

Modify the group where the document is located: chgrp

Modify the File Permission: chmod

View the default permissions of a file (a number will be returned, and the last three are the permissions not required in the directory and file, and the (-rw-) directory is (drwxrwxrwx )): unmask

Check the file content (nano editable file)

Cat: displays the file content from the first line.

Tac: displays the file content from the last line

Nl: displays the row number by the way (empty rows do not show the row number)

The cat-n file can also display the row number, and the line number of the empty row will also be displayed.

More: displays data on one page.

Less: similar to more, but can flip the page forward

Head: only view the first few rows of data (only 10 rows are displayed by default) (for example, the header-n 3 File Name Only displays the first three rows of this file)

Tail: only the last few rows

Od: Read File Content in binary mode

Search for file names

Whereis: Find a specific file

Locate: equivalent to fuzzy search. Enter the name of part of the file to obtain the path of the relevant file.

Find: search on the disk, the speed is relatively slow

Note: in linux, commands are embedded and installed. You need to configure the PATH variable for installation.