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linux shell 中判断文件、目录是否存在的方法 -e filename 如果 filename存在,则为真
-d filename 如果 filename为目录,则为真
-f filename 如果 filename为常规文件,则为真
-L filename 如果 filename为符号链接,则为真
-r filename 如果 filename可读,则为真
-w filename 如果 filename可写,则为真
-x filename 如果 filename可执行,则为真
-s filename 如果文件长度不为0,则为真
-h filename 如果文件是软链接,则为真 常用例子
如果存在某文件,则删除 - if [ -f trials ]; then rm ${result_path}trials; fi
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如果没有文件夹,则创建 - if [ ! -d $result_name ];then
- mkdir -p $result_name
- fi
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shell命令判断文件或文件夹是否存在,先直接看实例: [size=1em]- #!/bin/sh
- #判断文件存在,判断是否为文件夹等
- testPath="/Volumes/MacBookProHD/Mr.Wen/08 shell命令"
- testFile="/Volumes/MacBookProHD/Mr.Wen/08 shell命令/fileWen"
- #判断文件夹是否存在 -d
- if [[ ! -d "$testPath" ]]; then
- echo "文件夹不存在"
- else
- echo "文件夹存在"
- fi
- #判断文件夹是否存在,并且具有可执行权限
- if [[ ! -x "$testFile" ]]; then
- echo "文件不存在并且没有可执行权限"
- else
- echo "文件存在并有可执行权限"
- fi
- #判断文件是否存在
- if [[ ! -f "$testFile" ]]; then
- echo "文件不存在"
- else
- echo "文件存在"
- fi
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在shell命令脚本编写当中,会遇到各种对文件的判断,除了以上常用的判断,还有其他的可以使用,如下:
Conditional Logic on Files | -a file exists. | -b file exists and is a block special file. | -c file exists and is a character special file. | -d file exists and is a directory. | -e file exists (just the same as -a). | -f file exists and is a regular file. | -g file exists and has its setgid(2) bit set. | -G file exists and has the same group ID as this process. | -k file exists and has its sticky bit set. | -L file exists and is a symbolic link. | -n string length is not zero. | -o Named option is set on. | -O file exists and is owned by the user ID of this process. | -p file exists and is a first in, first out (FIFO) special file or | named pipe. | -r file exists and is readable by the current process. | -s file exists and has a size greater than zero. | -S file exists and is a socket. | -t file descriptor number fildes is open and associated with a | terminal device. | -u file exists and has its setuid(2) bit set. | -w file exists and is writable by the current process. | -x file exists and is executable by the current process. | -z string length is zero. |
shell 判断文件内容是否改变 判断文件内容是否改变: 1)md5值判断 2)diff 判断 - #添加日志时间戳
- function fn_showlog()
- {
- local curtime;
- curtime=`date +"%Y%m%d-%H:%M:%S"`
- echo "$curtime ------ $1";
- }
- #判断文件内容是否一致
- function diff_file(){
- for file in `ls $1`
- do
- if [ ! -f "$2$file" ];then
- fn_showlog "存在新增文件:$2$file"
- return 0
- else
- diff $file $2$file
- if [ $? -ne 0 ];then
- fn_showlog "文件内容发生变化:$file"
- return 0
- fi
- fi
- done
- return 1
- }
- diff_file "python*Ip" "/home/admin/tools/"
- if [ $? -eq 0 ];then
- fn_showlog "内容发生改变......"
- else
- fn_showlog "内容未发生改变,退出脚本!"
- exit 0
- fi
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linux shell 中判断文件、目录是否存在的方法 来自:https://www.jb51.net/article/186273.htm
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