coins.txt
gold 1 1986 USA American Eagle gold 1 1968 Austria Franz Josef 100 Korona silver 10 1964 USA ingot gold 1 1956 Switzeland ingot
awk ‘{print}‘ coin.txt
awk ‘{print $1}‘ coin.txt
awk ‘{print NR "\t" $1 "\t" $2 "\t" $3}‘ coin.txt
awk ‘$3==1986{print $0}‘ coin.txt
原文：https://www.cnblogs.com/douzujun/p/10367486.html