xyqing525

摘要： （1）Using let let result=2+1 let result=2-1 let result=2*1 let result=2/1(2) Using bracket echo $(($p1+$p2)) OR sum=$(($p1+$p2)) echo $sum(3) Using ` a 阅读全文

摘要： (1) Source code #! /bin/bashreference () { pa=\$"$1" echo $pa x=`eval "expr $pa "` echo $1=$x local aaa=$x bbb=$x eval "$1='test been modified'" retur 阅读全文