sort Examples

sort - sort lines of text files 

sort [OPTION]... [FILE]...

-b: ignore leading blanks 
-f: fold lower case to upper case characters 
-n: compare according to string numerical value 
-R: sort by random hash of keys 
-r: reverse the result of comparisons 
-c: check for sorted input; do not sort 
-k: start a key at POS1 (origin 1), end it at POS2 (default end of line) 
-o: write result to FILE instead of standard output 
-t: use SEP instead of non-blank to blank transition 

• sort entries by last name
  sort -k2 ../data/full-name.txt
  [Output]

• sort by country (second column) and inside a country by decreasing population (4. column)
  sort -t, -k2,2 -k4,4nr ../data/city.sample.csv
  [Output]

• Lottery-forecast (6 from 49)
  seq 1 49 | sort -R | head -n6
  [Output]

• read the country specific city-files and sort them, based on the name of the city
  sort -t, -k1 ../data/city-*.csv
  [Output]

• check, if input is sorted
  seq 1 5 | sort -c && echo $?
  [Output]

• check, if input is sorted
  seq 1 5 | sort -R | sort -c 2>&1 | tee /dev/null
  [Output]