Dispay Sorted Lines of a File

$ cat apple.txt
core
worm seed
jewel
$ sort apple.txt
core
jewel
worm seed                                
$ cat net.txt
CRAB
BARNACLE
BARNACLE
CRAB
SALMON
BARNACLE
BARNACLE
BARNACLE
BARNACLE
$ sort net.txt
BARNACLE
BARNACLE
BARNACLE
BARNACLE
BARNACLE
BARNACLE
CRAB
CRAB
SALMON
$ sort -u net.txt
BARNACLE
CRAB
SALMON                                        
$ 

You can use other options of sort to get a file in alphabetical order; for example, you can use the b, and f options of sort to: ignore leading blanks (b), and fold upper case and lower case letters together (f).

$ cat poem.txt
 snow
  ice
      tiny lights
  the
    winter
Reaches
      to
  a
   glowing, cold
   Moon
$ sort poem.txt
      tiny lights
      to
    winter
   Moon
   glowing, cold
  a
  ice
  the
 snow
Reaches                                 
$ sort -b poem.txt
   Moon
Reaches
  a
   glowing, cold
  ice
 snow
  the
      tiny lights
      to
    winter                          
$ sort -bf poem.txt
  a
   glowing, cold
  ice
   Moon
Reaches
 snow
  the
      tiny lights
      to
    winter                       
$
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