Shulou(Shulou.com)06/03 Report--

Today, the editor shares with you the method of using if to determine the existence of a directory in Linux. I believe many people do not know much about it. In order to make you understand better, I have summarized the following contents for you. Let's look down together. I'm sure you'll get something.

How Linux uses if to determine whether a directory exists

The methods are as follows:

1. The method of judging the existence of a directory by using if in the script

#! / bin/bashif [- d "c"]; then echo "directory c exists" else echo "directory does not exist" fi

Recommended: Linux tutorial column

2. Simple and convenient writing method

#! / bin/bash [- d "c"] & & echo "directory c exists" # or [- d "d"] | | echo "directory d does not exist"

More judgment formats are as follows:

-e filename if filename exists, true-d filename if filename is directory, true-f filename if filename is regular file, true-L filename if filename is symbolic link, true-r filename if filename is readable, true-w filename if filename is writable, true-x filename if filename executable, true-s filename if file length is not 0, true-h filename if file is soft link

These are the details of the method of using if to determine the existence of a directory in Linux. Have you gained anything after reading it? If you want to know more about it, welcome to the industry information!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.