sort command in linux

sort command: The sort command arranges lines of text alphabetically or numerically in order.

Output of file

# cat file1
3

4

5

2

1

Use sort command to arrange value in order

# sort file1

1

2

3

4

5

Redirect out of sort command in new file

#  sort file1 > sortoutput

# cat sortoutput

1

2

3

4

5

Arrange value in reverse order

# sort -r file1

5

4

3

2

1

Remove duplicate value from file and arrange in ascending order

File output

# cat newfile

5

4

3

3

2

2

1

#sort -u newfile

1

2

3

4

5

sort command, Marge two file
File2 output, as file1 output mentioned above

# cat file2
4
2
5
6

# sort file1 file2
1
2
2
3
4
4
5
5
6

sort command, Marge two file and remove duplicate entry

# sort -u file1 file2

1

2

3

4

5

6