摘要： 1、Simple If Statement语法：if (conditional-expression)action如果是多个action，则语法如下：if (conditional-expression){action1;action2;}Print all the items with quantity <=5:$ awk -F "," '{ if ($5 <= 5) \print "Only",$5,"qty of",$2, "is available"; }' \items.txt 阅读全文