bash for loop 循环从 0 到 10 和从 A 到 Z

从 A 到 Z

for i in {A..Z}; do echo $i; done

从 0 到 10

# 方法一
for i in {0..10}; do echo $i; done

# 方法二
for i in $(seq 1 10); do echo $i; done