September 13, 2015 and 15th "shell, Sed&awk use (i)"-jy1506402-19+liuhui880818

Directory:

First, the operation Principle of shell program

Second, Shell common skills

1. Command history

2. Command aliases

3. Command Reference

4. File name Wildcard

5. Common shortcut keys

6. Complement function

7. Input and output redirection and piping

8. Interact with user commands

9. Script specification establishment and execution

10.bash Common Options

11. Command Status Results

Continue to be found in ...

Three, the common knowledge points description

1. Variables

1) Variable type

2) Local Variables

3) Environment variables

4) Special variables

2. Condition Testing

1) Integer test

2) string test

3) file test

4) test expression

3. Condition judgment (Select execution)

4. Script parameters (positional parameter variables)

5. Circular statement For,while,until (flow control)

6. Arithmetic operations

7.case statements

8. Functions

1) Function action

2) How to use the function

3) Definition Method

4) Call function

5) The status return value of the custom function

9. Arrays

1) How array elements are assigned

2) referencing elements

10. Text Processing tools The use of SED and awk

1) SED command usage

2) awk command usage

Four, Shell exercises

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September 13, 2015 and 15th "shell, Sed&awk use (i)"-jy1506402-19+liuhui880818