Shell for

数字循环

for((i=1;i<=10;i++));
do 
    echo $(expr $i \* 3 + 1);
done

for i in {1..10}
do
    echo $(expr $i \* 3 + 1);
done

for i in $(seq 1 10)
do 
    echo $(expr $i \* 3 + 1);
done

for i in $* ;
do
    echo $i is input chart\! ;
done

for i in f1 f2 f3 ;
do
    echo $i is appoint ;
done

list="rootfs usr data data2"
for i in $list;
do
    echo $i is appoint ;
done

# 定义一个数组变量
fruits=("Apple" "Banana" "Orange" "Grapes")

# 使用for循环遍历数组元素
for fruit in "${fruits[@]}"; 
do
    echo "Fruit: $fruit"
done

for file in /proc/*;
do
    echo $file is file path \! ;
done

for file in $(ls *.sh)
do
    echo $file is file path \! ;
done

for i in `ls`;
do 
    echo $i is file name\! ;
done