unique sorted search from text file
by MakeTopSite from LinuxQuestions.org on (#6QXMY)
Code:$ cat file.txt
word4 word2
word4 word2
word3 word1
word1 word3
$How can I please get this output from file.txt ?
Code:word1
word2
word3
word4
word4 word2
word4 word2
word3 word1
word1 word3
$How can I please get this output from file.txt ?
Code:word1
word2
word3
word4