How does Linux use if to determine whether a directory exists-linux operation and maintenance

1. Use if in the script to determine whether the directory exists

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

Recommendation: Linux Tutorial Column

2. Simple 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  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 file length is not 0
 -h filename true if the file is a soft link