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A pattern-directed scanning and processing language.

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Yet another option with AWK: awk 'x !~ $0; {x=$0}' This way you can get the same behavior as uniq, but can also do per column. awk -F/ 'x !~ $2; {x=$2}' -F sets the field separator. This way … you remove lines where the second field is consecutively equal to the previous line's second field. $ cat c.txt line/one line/two otherline/two yetanotherline/two line/three $ awk -F/ 'x !~ $2; {x=$2}' c.txt line/one line/two line/three …
answered May 23 '17 by Marcos Oliveira