How will I insert a line "abcdef" at every 100th line of a file?

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How will I insert a line "abcdef" at every 100th line of a file?..

Answer / aayan

sed '1~100iabcdef' filename.txt

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16 Yes

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How will I insert a line "abcdef" at every 100th line of a file?..

Answer / pix

sed '100iABCDEF' file1

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9 Yes

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