bash的几种for循环

1、罗列式

for VARIABLE in 1 2 3 4 5 .. N
do
	command1
	command2
	commandN
done

#!/bin/bash
for i in 1 2 3 4 5
do
   echo "Welcome $i times"
done

2、使用rang

#!/bin/bash
for i in {1..5}
do
   echo "Welcome $i times"
done

3、使用rang and step

echo "Bash version ${BASH_VERSION}..."
for i in {0..10..2}
  do
     echo "Welcome $i times"
 done

4、使用seq

for i in `seq 1 5`
do
   echo "Welcome $i times"
done

5、和高级语言一样的for

for (( EXP1; EXP2; EXP3 ))
do
	command1
	command2
	command3
done

#!/bin/bash
for (( c=1; c<=5; c++ ))
do
	echo "Welcome $c times..."
done

#!/bin/bash
for (( ; ; ))
do
   echo "infinite loops [ hit CTRL+C to stop]"
done