```
(cmd)$ IFS= read -r p # with leading and trailing tabs
foo
(cmd)$ echo "|${p}|"
| foo |
(cmd)$ read -r p
foo
(cmd)$ echo "|${p}|"
|foo|
(ins)$ IFS= read -r p # with leading and trailing space
foo
(cmd)$ echo "|${p}|"
| foo |
(cmd)$ read -r p
foo
(cmd)$ echo "|${p}|"
|foo|
```
Test adduser.sh with IFS= lins and su -l newuser with the space/tab.
Also, confirm the non-space/tab padded password doesn't work.