Shell判断文件是否存在

发表于 2018-06-24 更新于 2023-08-17 分类于 Shell

Shell判断文件是否存在

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.

示例：

if [ -f ${mypath} ];then
    echo "file exist"
fi

if [ "${mypath}" != "" ] && [ -f ${mypath} ];then
    echo "mypath is not empty and file exist"
fi

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