shell 循环

#!/bin/bash
for var in 12 3 4 
do
    echo $var
done

for file in $(ls ..)
do
    echo "file: $file"
done

echo "the number of the arguments is $#"
for argument
do
    echo $argument
done

for (( i=1;i<=10; i++ ))
do
    echo "$i time"
done

i=0
sum=0
while (( i < 10 ))
do
    echo "i:$i, sum:$sum"
    let "sum+=$i"
    let "i++"
done

while [ "$*" != "" ]
do
    echo "$1"
    shift
done #result: 
<img src="/assets/2.png" alt="1.png" class="img-center" width="1544" height="1244"/>