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Removing duplicates from new file

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# 1  
Old 09-18-2015
Removing duplicates from new file
i hav two files like

Quote:
file 1
unix,a,d,c,f,g,
unix2,a,s,d,f,g,
unix3,e,d,f,g,s,
unix4,f,d,s,a,d,
Quote:
file2

unix,g,f,s,d,f,
unix5,g,f,d,s,d,
unix6,f,d,s,e,r,t,
unix3,t,h,g,f,d,
unix2,g,f,d,s,a,

i want to remove/delete all the duplicate lines in file2 which are viz unix,unix2,unix3.I have tried previous post also,but in that complete line must be similar.In this case i have to verify first column only regardless what is the content in succeeding columns.
# 2  
Old 09-18-2015
Any attempt from your side?
# 3  
Old 09-19-2015
i have tried this one from previous post
Code:
egrep -v $(cat file2.csv | tr '\n' '|' | sed 's/.$//') file1.csv

but its not working,as i want to remove all the duplicate records from file 2 considering column 1 as an unique
# 4  
Old 09-19-2015
Untested, but this seems pretty straight forward:
Code:
awk -F, '
FNR == NR {
	d[$1]
	next
}
!($1 in d)' file1.csv file2.csv

As always, if you want to try this on a Solaris/SunOS system, change awk to /usr/xpg4/bin/awk or nawk.
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