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Linux in a Nutshell, Fourth Edition by Aaron Weber, Stephen Figgins, Ellen Siever

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Name

chpasswd

Synopsis

                  chpasswd [option]

System administration command. Change user passwords in a batch. chpasswd accepts input in the form of one username:password pair per line. If the -e option is not specified, password is encrypted before being stored.

Option

-e

Passwords given are already encrypted.

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