[Linux 常見問題] Pseudo-terminal will not be allocated because stdin is not a terminal

Source From Here
Question
I am trying to write a shell scipt that creates some directories on a remote server and then uses scp to copy files from my local machine onto the remote. Here's what I have so far:

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1. ssh -t user@server<
2. DEP_ROOT='/home/matthewr/releases'  
3. datestamp=$(date +%Y%m%d%H%M%S)  
4. REL_DIR=$DEP_ROOT"/"$datestamp  
5. if [ ! -d "$DEP_ROOT" ]; then  
6.     echo "creating the root directory"  
7.     mkdir $DEP_ROOT  
8. fi  
9. mkdir $REL_DIR  
10. exit  
11. EOT  
12.   
13. scp ./dir1 user@server:$REL_DIR  
14. scp ./dir2 user@server:$REL_DIR  

Whenever I run it I get this message:

Pseudo-terminal will not be allocated because stdin is not a terminal.

And the script just hangs forever.

My public key is trusted on the server and I can run all the commands outside of the script just fine. Any ideas?

How-To
Try ssh -t -t to force pseudo-tty allocation even if stdin isn't a terminal.

See also: Terminating SSH session executed by bash script

Below are execution examples on CentOS 6.4: