cut Command to use

for example ：
Given the file cut_data.txt And the content is ：

  No Name    Score
  1 zhang 20
  2 li  80
  3 wang 90
  4 sun  60

1、 Use the default delimiter to cut the contents of the file , And output the first field after cutting

[[email protected] ~]# cut -f 1 cut_data.txt 
No Name Score
1 zhang 20
2 li  80
3 wang 90
4 sun  60

2、 Cut file content , And output the first field and the third field after cutting

[[email protected] ~]# cut -d' ' -f 1,3 cut_data.txt 
No Score
1 20
2 
3 90
4 
[[email protected] ~]# 

3、 Cut by byte ： Output the first byte to the second byte of the cut 10 Bytes of content

[[email protected] ~]# cut -b -10 cut_data.txt 
No Name Sc
1 zhang 20
2 li  80
3 wang 90
4 sun  60
[[email protected] ~]# 

4、 Cut by character ： Output the first character and the second character after cutting 5 The content of a character

 [[email protected] ~]# cut -c 1,5 cut_data.txt 
Na
1a
2 
3n
4n
[[email protected] ~]# 

5、 Cut according to the specified delimiter ： The contents are as follows , Output the contents of the first field and the third field

  No|Name|Score
  1|zhang|20
  2|li|80
  3|wang|90
  4|sun|60

[[email protected] ~]# cut -d'|' -f 1,3 cut_data.txt 
No|Score
1|20
2|80
3|90
4|60
[[email protected] ~]# 

uniq Command to use

New file uniq_data.txt, The content of the document is
Welcome to Linux
Windows
Windows
Mac
Mac
Linux

1、 Use uniq The command outputs the result after de duplication 

[[email protected] ~]# uniq -i uniq_data.txt 
Welcome to Linux
Windows
Mac
Linux

2、 Use uniqmingl Output only duplicate lines 

[[email protected] ~]# uniq --all-repeated uniq_data.txt 
Windows
Windows
Mac
Mac

3、 Use uniq The command outputs non repeating lines 

[[email protected] ~]# uniq -u uniq_data.txt 
Welcome to Linux
Linux

4、 Use uniq The command counts the number of repetitions 

[[email protected] ~]# uniq -c uniq_data.txt 
  1 Welcome to Linux
  2 Windows
  2 Mac
  1 Linux