Linux uses if to determine whether a directory exists.

How to use if in Linux to determine whether a directory exists

Here’s how:

1. How to use if in the script to determine whether a directory exists

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

2. Simple writing

#!/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 True if filename exists

-d filename True if filename is a directory

-f filename True if filename is a regular file.

-L filename True if filename is a symbolic link

-r filename True if filename is readable

-w filename True if filename is writable

-x filename True if filename is executable

-s filename True if filename is not zero length

-h filename True if filename is a soft link

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