Basic application of TR command in Linux

The TR command can be seen as a simplified form of sed and can be used to replace deleted characters.
Tr-translate or delete characters
Common command formats are: Tr-c-d-s characters 1 characters 2 < filenames

| -C | Substituting character 2 for characters not contained in character 1 (character 1 complement)

| -D | Deleting a String 1

| -S | Deletes all occurrences of a character and compresses the repeating string to one character.

Example 1: Removing duplicate lowercase characters

Example 2: Delete empty lines

Example 3: Character substitution

Example 4: Deleting a character

Application of Example 5:-c

Basic application of TR command in Linux