Linux Basic Commands Personal note essence

Catalogue and documents

2. Pwd
   -P Returns the true path of the link
4. Cd
   CD-Return to the previous directory
   CD switch to the current user's home directory
6. Ls
   -D displays information about the directory itself rather than the information in the directory
   -C Displays the time when the file or directory attribute was last modified
   -U shows when the file or directory was last accessed
   -T to modify the time sort, by default sort by file name
8. Mkdir
   -P Create a multilevel directory
10. Find
    find[command options [path] [Expression options]

    Option:-empty find a blank file or directory

    -group Find by group

    -name Search by name

    -iname Case insensitive

    -mtime Modify Time Lookup

    -size

    -type f,d,b,c,l

    -user

    -exec executing commands on the found document

    -A

    -O

12. Du view the capacity of a file or directory

-sh Show only Totals

View File Contents

2. Cat

   -B Displays line numbers, blank lines do not appear

   -N Displays line numbers, including blank lines

4. Tail

   -F Dynamic display of file contents, CTRL + C exit

6. Wc

   -l display number of file lines

8. grep

   -i

   -v

   --color

10. Echo

    -N does not output line breaks

    -E supports escape characters starting with backslashes, masking the original meaning of the character behind the backslash

    If you use the-e option, you can recognize the special meaning of the following sequence of characters

    \ \ Backslash

    \a Alarm

    \b Backspace key

    \c does not generate extra output

    \f Input form format, keep cursor position after line break

    \ nthe line break

    \ t generates a horizontal tab

    \v Creating a vertical tab

Linux Basic Commands Personal note essence