php - shell script cannot find directory or file

Question

Execute shell script on linux

But when executed, it displays

The directory does exist. what happened? ?

Answer 1

When assigning values ​​to bash variables, there cannot be spaces on both sides of the equal sign. It should be written as:

dir=/webserver/test/

Answer 2

dir =/web...
There can be no spaces on the left and right sides of the equal sign

Answer 3

Don’t add a space after dir