chpasswd - update password file in batch
chpasswd [-e]
chpasswd reads a file of user name and password pairs from standard
input and uses this information to update a group of existing users.
Without the -e switch, the passwords are expected to be cleartext. With
the -e switch, the passwords are expected to be in encrypted form.
Each line is of the format
user_name:password
The named user must exist. The supplied password will be encrypted as
necessary, and the password age updated, if present.
This command is intended to be used in a large system environment where
many accounts are created at a single time.
The input file must be protected if it contains unencrypted passwords.
passwd(1), useradd(8), newusers(8)
Julianne Frances Haugh (jfh@austin.ibm.com)
CHPASSWD(8)
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