sort

Question 1

sort

Answer 1

Write sorted concatenation of all FILE(s) to standard output.

Question 2

sort

• r
• n
• k
• u
• t

Answer 2

• r, –reverse, Reverse the result of comparisons.
• n, –numeric-sort, Shuffle, but group identical keys.
• k, –key=KEYDEF, Sort via a key; KEYDEF gives location and type.
• u, –unique, With -c, check for strict ordering; without -c, output only the first of an equal run.
• t, –field-separator=SEP, Use SEP instead of non-blank to blank transition.