[awk]awk 与 shell的参数传递(双向)

1) 从bash传递匹配参数给awk:

printf "Enter search pattern: "

read pattern
awk "/$pattern/ "'{ nmatches++ }
     END { print nmatches, "found" }' /path/to/data

或：

printf "Enter search pattern: "
read pattern
awk -v pat="$pattern" '$0 ~ pat { nmatches++ }

       END { print nmatches, "found" }' /path/to/data

https://www.gnu.org/software/gawk/manual/html_node/Using-Shell-Variables.html

2) 从awk传递多个结果赋值给bash变量: /*采用eval或source*/

$z=`echo cpe:/o:yggdrasil:linux |awk -F ":" '{print "vendor="$3; print "product="$4;}'`;eval $z; echo $vendor; echo $product
yggdrasil
linux

http://www.theunixschool.com/2012/08/awk-passing-awk-variables-to-shell.html