My python growth path-03

Linux commands-file, Disk Management

1.文件管理    <1>查看文件信息：ls        ls是英文单词list的简写，其功能为列出目录的内容，是用户最常用的命令之一，它类似于DOS下的dir命令。        Linux文件或者目录名称最长可以有265个字符，“.”代表当前目录，“..”代表上一级目录，以“.”开头的文件为隐藏文件，需要用 -a 参数才能显示。    ls常用参数：

Parameters	meaning
-A	Displays all subdirectories and files in the specified directory, including hidden files
-L	Display file details in a list
-H	Display file size in a humane way with-l

The information listed in the figure has the following meanings:

Wildcard characters:

wildcard characters	meaning
*	file represents all characters in a file name
ls te*	Find a file that starts with Te
ls *html	Find the file that ends with HTML
?	represents any one of the characters in the file name
ls?. C	find only the first character, the file with the suffix. C
ls a.?	only 3 characters are found, the first 2 characters are a., the last character arbitrary file
[]	["and]" encloses a group of characters, which means that you can match any one of the character groups. "-" is used to represent the range of characters.
[ABC]	matches any of a, B, C
[a-f]	matches any one of the characters from a to F range
ls [a-f]*	Find a file that starts with any of the characters from a to F range
ls a-f	find article A file named A-f, when "-" is outside the square brackets.
\	If you want to use wildcards as normal characters, you can precede them with escape characters. “?” and "*" in square brackets without the use of escape characters to lose the role of a wildcard character.
ls *a	find files with file name *a

My python growth path -03