Linux Command -- cat, linux -- cat

Linux Command -- cat, linux -- cat

Cat function: 1. output text content to the screen 2. output text content to another file

Parameter description:

-N: numbers all rows.

-B: no blank row number

-S: multiple consecutive blank rows are displayed as single rows.

Example:

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20171.txt text content

[Root @ test tools] # cat 1.txt
C

D
E

F

 

G

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Upload 1.txt text and number all rows

[Root @ test tools] # cat-n 1.txt
1c
2
3d
4e
5
6
7f
8
9
10
11g

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Only numbers non-blank rows.

[Root @ test tools] # cat-B 1.txt
1c

2d
3e

4f

 

5g

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Contains 1.txt text. multiple lines of blank lines are displayed as one line.

[Root @ test tools] # cat-s 1.txt
C

D
E

F

G

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Output 1.txt content to 2.txt, and then 2.txt content.

[Root @ test tools] # cat 1.txt> 2.txt
[Root @ test tools] # cat 2.txt
C

D
E

F

 

G

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