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Requires GNU sed

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edited Nov 25, 2018 at 13:01

GNU sed solution:

sed -E '/^([^,]+,)\1/d' input.csv

The output:

text1,text2,string1,string2
text4,text5,string1,string2

sed solution:

sed -E '/^([^,]+,)\1/d' input.csv

The output:

text1,text2,string1,string2
text4,text5,string1,string2

GNU sed solution:

sed -E '/^([^,]+,)\1/d' input.csv

The output:

text1,text2,string1,string2
text4,text5,string1,string2

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answered Nov 25, 2018 at 12:42

sed solution:

sed -E '/^([^,]+,)\1/d' input.csv

The output:

text1,text2,string1,string2
text4,text5,string1,string2