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awk: add print every nth line example (#2008)

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Sinan 2018-02-22 22:05:11 -08:00 • committed by Agniva De Sarker
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pages/common/awk.md
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@ -21,3 +21,7 @@
- Sum the values in the first column and pretty-print the values and then the total:
`awk '{s+=$1; print $1} END {print "--------"; print s}' {{filename}}`
- Print every third line starting from the first line:
`awk 'NR%3==1' {{filename}}`