1. Command function
sort sorts the contents of the input file according to the specified rules, and then outputs the sorted contents.
2. Syntax
sort option file
Parameter Description
| parameter |
Parameter Description |
| -b |
Ignore spaces at the beginning of each line |
| -n |
Sort by size of string value * |
| -r |
reverse order |
| -u |
remove duplicate lines |
| -t |
Specify the delimiter |
| -k |
Sort by interval |
3. Example of use
[root@localhost ~]# cat test.txt 172.16.0.2 172.16.0.8 172.16.0.4 172.16.0.3
Example 1 sort does not take any parameters.
The default comparison method of sort, from the first letter backward, is compared according to the ASCII code, and the output is sorted in ascending order by default.
[root@localhost ~]# sort test.txt 172.16.0.2 172.16.0.3 172.16.0.4 172.16.0.8
Example 2 Sort numerically by -n
[root@localhost ~]# sort -n test.txt 172.16.0.2 172.16.0.3 172.16.0.4 172.16.0.8
Example 3 -r sort descending
[root@localhost ~]# sort -r test.txt 172.16.0.8 172.16.0.4 172.16.0.3 172.16.0.2
Example 4
[root@localhost ~]# cat test.txt3 ACBDE ACBDE 12345 [root@localhost ~]# sort -u test.txt3 12345 ACBDE