Hi all,

I have a tab-delimited file and want to remove identical lines, i.e. all of line 1,2,4 because the columns are the same as the columns in other lines. Any input is appreciated.

abc gi4597 9997 cgcgtgcg $%^&*()()*
abc gi4597 9997 cgcgtgcg $%^&*()()*
ttt gi9865 8879 tgcgtgtt *(())^#@!!
abc gi4597 9997 cgcgtgcg $%^&*()()*
fgy gi9876 0975 cgaggcgc @#$%^*&*((
abc gi4597 9997 ttgttgttc $%^&*()()*

---------- Post updated at 09:29 AM ---------- Previous update was at 09:19 AM ----------

It just clicked:
awk 'x[$1,$2,$3,$4,$5,$6]++' filename

Any other methods would be helpful

If you want a single line among several identical lines you make a | sort -u. In fact I am not sure I understood your request.