I have a plain text file with words, which are separated by comma, for example:
word1, word2, word3, word2, word4, word5, word 3, word6, word7, word3
i want to delete the duplicates and to become:
word1, word2, word3, word4, word5, word6, word7
Any Ideas? I think, egrep can help me, but i'm not sure, how to use it exactly....