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How to encrypt and decrypt a password in UNIX shell script?

Unix Shell Script [srv049 ~]$ cd /informatica [srv049 informatica]$ echo  'YourPassw0rd@123#' | base64 > passcodefile.crdn [srv049 informatica]$ echo $(echo Your encryted passwrod is : ) $(head -1 passcodefile.crdn) Your encryted passwrod is : WW91clBhc3N3MHJkQDEyMyMK [srv049 informatica]$ cd /informatica [srv049 informatica]$ PASSWORD_VARIABLE=$(echo $(head -1 passcodefile.crdn) | base64 --decode) [srv049 informatica]$ echo '                         'Original password : $PASSWORD_VARIABLE                          Original password : YourPassw0rd@123# [srv049 informatica]$