This question already has an answer here:
I recently encountered a situation where I tried to use
! as a record separator for my string array in shell script. When I used it in my shell script, the script got expanded automatically. An example to reproduce the situation can be as below.
check_variable="Hello" echo "$check_variable" Output: Hello ###For multiple strings, I tried to concatenate with ! as a record separator. echo "$check_variable !" Output: echo "$check " > Results.txt
Then after some research, I had figured out
! is in fact a special character and should not be used as record separators. So, exactly why is
! used? Is there any way I can turn off the
! character and use it in my shell script?