#!/bin/bash IFS_old=$IFS IFS=$'\n' for line in $(cat /home/serverList) do echo $line IFS=$IFS_old for word in $line do echo $word done IFS=$'\n' done IFS=$IFS_old
for((i=0; i<${#word}; ++i))
do
echo ${word:i:1};
done
注:${#word}返回变量word的值的长度,即单词的长度。