Bash Common basic features (1)

Bash Common basic features (1)

Bash is a common shell, a recent interaction with the user:

1. command-line editing:

   CTRL + A: Skip to the beginning of the command

   Ctrl+e: Jump to the end of the command line

   Ctrl+u: Delete the cursor to the beginning of the command line

   CTRL+K: Delete the cursor to the end of the command line

   CTRL+D: Delete cursor specified character

   Ctrl+l: Clear Screen

2. History: Command Chronicle command

   Option:-C: Empty command history

   -D: Delete the command at the specified location

   -W: Save command history to the. bash_history file

   Common techniques:

   !n: Executes the nth command in the command history;

   !-n: Executes the reciprocal nth command in the command history;

   !: Executes the previous command;

   !string: The most recent command in the command history that starts with a specified string

   !$/esc+./ALT +. : references the last parameter of the previous command;

3. Command and file path completion: Press the TAB key

4. FileName Wildcard related common skills

*: Represents any character of any length

?: Represents any single character

[]: Represents any single character in the specified range

[ABCD]: one of the characters that represents ABCD

[A-m]: represents one of the characters in A to M

[A-Z]: represents all lowercase letters as [: Lower:]

[A-Z]: represents all uppercase letters, as if [: Upper:]

[0-9]: Represents a number, as [:d Igit:]

[A-za-z]: represents uppercase and lowercase letters as [: Alpha:]

[0-9a-za-z]: represents numbers and uppercase and lowercase letters, as if [: Alnum:]

[: Space:]: white space character

[:p UNCT:]: Punctuation

[: Lower:]: lowercase letter, as [A-z]

[: Upper:]: Uppercase, as [A-z]

[: Alpha:]: Uppercase and lowercase letters, as [a-za-z]

[:d igit:]: number, as [0-9]

[: Alnum:]: Numbers and uppercase and lowercase letters, as if [0-9a-za-z]

[^]: matches any single character outside the specified range

If English is good, man 7 Glob View document

Example Description: File name wildcard:

Background Create W888,DE3,B1 good,1314,w.llow,x 66,9ay,520,d02i these several files

1. Show all files starting with 5 or W

LS [5w]*

2. Display all files that contain letters

LS *[a-za-z]*

3. Display files that contain only special characters

LS *[^[:alnum:]]*

LS *[^0-9a-za-z]*

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Bash Common basic features (1)