$ seq 1000 #起始默认是 1，间隔默认也是1
$ seq 2 1000 #间隔默认是1
$ seq 1 3 10 #从1到10，间隔为3，结果是：1 4 7 10
#!/bin/bash
for i in `seq 1 10`
do
echo eth$i does not have a 1000 card!!
done
Linux循环遍历文件写法：
for file in `ls /etc/sysconfig/network-scripts/ifcfg-*`
do
echo $file
done
以下是本人写的某脚本：
#!/bin/bash
for file in `ls /etc/sysconfig/network-scripts/ifcfg-*`
do
i=${file##*-}
#echo now checking $i
if [ `ifconfig $i | grep 10000base | wc -l` -ge 1 ]; then
id = `cat /proc/interrupts | grep $i | grep -v $i- | awk '{print $1}'`
echo 'ff' > /proc/irq/${id%:*}/smp_affinity
echo $i optimized.
fi
done
参考文章：linux shell 动态生成 数组系列 seq使用技巧
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