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 $