tr Examples

tr - translate or delete characters 

tr [OPTION]... SET1 [SET2] 

-c: use the complement of SET1 
-d: delete characters in SET1, do not translate 
-s: replace each input sequence of a repeated character that is listed 
    in SET1 with a single occurrence of that character 

• change text to lowercase
  tr 'A-Z' 'a-z' < ../data/moby-dick.txt
  [Output]

• shift-5 caesars cipher algo encoding
  echo "this simulates a simple caesars chiper algo" | tr 'A-Za-z' 'F-ZA-Ef-za-e'
  [Output]

• shift-5 caesars cipher algo encode and decode
  echo "this simulates a simple caesars chiper algo" | tr 'A-Za-z' 'F-ZA-Ef-za-e' | tr 'F-ZA-Ef-za-e' 'A-Za-z'
  [Output]

• extracts all words from the book (each word in a line)
  tr -c -s '[:alpha:]' ' ' < ../data/moby-dick.txt | tr ' ' '\n'
  [Output]

• delete all quotes (") from the input
  tr -d '"' < ../data/city.sample.csv
  [Output]

• remove all linebreaks
  tr '\n' ' ' < ../data/moby-dick.txt
  [Output]