shell脚本学习（二）：文件比较等操作

对应《Linux命令行与shell脚本编程大全》 -- 章节12.4.3

test1： -d file :检查目录

#!/bin/bash dir="/home//shell/dir" if [ -d $dir ] then echo "dir is exist" cd $dir ls else echo "dir is not exist!" fi 结果： dir is exist one two

test2：-e file :检查对象是否存在

#!/bin/bash dir="/home//shell/dir" file="one" if [ -e $dir ] then #dir exist echo "OK!$dir is exist!" echo "Now start check the file:$file" if [ -e $dir/$file ] then #file exist echo "OK!$file is exist!" date >> $dir/$file cat $dir/$file else #file not exist echo "Sorry!$file is not exist!" fi else #dir not exist echo "Sorry!$dir is not exist!" fi 结果： OK!/home//shell/dir is exist! Now start check the file:one OK!one is exist!

test3：