Concealing Password Input

Use the isql --conceal option, with the ":?" wildcard characters, to conceal the passwords you set when you create or alter users.

Start isql with the --conceal option before you create a user or change a password for a user.
For example, at the ny_rs Replication Server for the test_2 user, enter:
```
isql -Sny_rs -Utest_2 --conceal
Password:
```
Enter the alter user or create user command, and instead of typing a password in clear text, enter the :? wildcard pair of characters at the beginning of the command line for password entry.
For example, to change the password for the test_2 user:
```
alter user test_2
set password
:?
verify password
:?
go
```
Optionally, use the double wildcard character pair ":?:?" within the same line to prompt for confirmation of the new password. For example:
```
alter user test_2
set password
:?:?
verify password
:?
go 
```
isql prompts you for the information to replace the wildcard pair of characters. Each :? wildcard character pair you enter results in a separate :? prompt. Replication Server does display any characters you type at the :? prompt.
Enter the new password at the first :? prompt, which corresponds to the set password clause, and enter the old password at the second :? prompt, which corresponds to the verify password clause.
```
:? new_pasword
:? old_pasword
```
If you use the double ":?:?" character pairs option in the command, you see:
```
:? 
Confirm :?
:?
```
Enter the new password at the first :? prompt corresponding to the set password clause, enter the new password again at the second Confirm :? prompt, and enter the old password at the third :? prompt corresponding to the verify password clause.
If the password you enter complies with the password security requirements, you see:
```
User 'test_2' is altered.
```