用sed或awk提取方括號中字符串

a=[asdfghjk],b=[],c=[],d=[asdfghjklkjhgfds1234sdfgh]

 

 

 

echo a=[asdfghjk],b=[],c=[],d=[asdfghjklkjhgfds1234sdfgh] | awk -F"," '{for (i=1;i<=NF;++i) print $i}' | awk 'gsub("d=","") {gsub("^\\[","",$0); gsub("\\]$",""); print $0}'