Delete every seventh line using sed

I need a sed script that deletes every seventh line in a file. I managed to do this with an awk开发者_开发百科 script but wanted to look for a way to use sed to do this.

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You can try

sed 'n;n;n;n;n;n;d;' 

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Sai solution seems to be the best one. However, if you are using GNU sed and does not look for portability, you can use the step address:

$ seq 1 10 | sed '0~3d'
1
2
4
5
7
8
10

The n~m address matches all k-th line where k = n+m*i.