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Top Forums Shell Programming and Scripting Encrypt and decrypt the password in a Shell Script Post 302959736 by Showdown on Thursday 5th of November 2015 01:42:15 PM
Old 11-05-2015
To the best of my knowledge there is no robust way to encrypt/decrypt password in shell scripts. However you can try the below 4 approaches.

1. keep the username/password in a config file in some safe place and change the permission of that file and extract the credentials to use in your script.
2. Pass the username,password,DB name as command line arguments. $1 $2 $3
3. install the crypt package
4 The best method is to find the equivalent of " Oracle wallet manager" for Teradata which will keep the credentials secret forever.
 

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printpw(8)						      System Manager's Manual							printpw(8)

NAME
printpw - Outputs the contents of the password database SYNOPSIS
printpw [-acdgsu] FLAGS
Outputs all information. Use of this flag is the same as specifying all flags with -cdgsu. Outputs username and the comment string. Out- put username and the login directory. Outputs username and the group ID numerical value. Output username and the login shell. Output username and the UID numerical value. DESCRIPTION
The printpw command outputs the contents of the /etc/passwd database file in ASCII format to the standard output. When printpw is called with no option, all usernames in the database are output. The /etc/passwd database file is accessed through the standard library function getpwent. On secure systems that have changed this library function or on systems with Network Information Service (NIS) service installed, printpw produces the same information. When printpw is called in combination with any flag, one or more additional columns separated with : (colon) is output. EXAMPLES
To output the username, UID, and login directory of all users in the password database file, enter: /usr/sbin/acct/printpw -ud FILES
Specifies the command path The password database file. RELATED INFORMATION
Commands: acct(8) delim off printpw(8)
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