![awk substr example](https://ez3c.tw/images/no-image.png)
Iflengthisnotpresent,substr()returnsthewholesuffixofstringthatbeginsatcharacternumberstart.Forexample,substr(washington,5)returns ...,HiIhaveatablelikethisIwanttoknowhowmanytimesthestringin2ndcolumnappearsinthefirstcolumnassubstring.Forexamplethe...
how to use substr in awk?
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2015年6月17日—Ifyouwanttousesubstrfunctioninawk:awk'line=substr($0,1,index($0,/[0-9]/)-2);if(length(line)==0)line=$0;printline}'filename.
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