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chpasswd - Unix, Linux Command
NAME
chpasswd - update passwords in batch mode
SYNOPSIS
Tag | Description |
chpasswd [options]
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DESCRIPTION
chpasswd
reads a list of user name and password pairs from standard input and uses this information to update a group of existing users. Each line is of the format:
user_name:password
By default the supplied password must be in clear-text. Default encryption algorithm is DES. Also the password age will be updated, if present.
This command is intended to be used in a large system environment where many accounts are created at a single time.
OPTIONS
The options which apply to the
chpasswd
command are:
Tag | Description |
-e, --encrypted
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Supplied passwords are in encrypted form.
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-h, --help
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Display help message and exit.
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-m, --md5
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Use MD5 encryption instead DES when the supplied passwords are not encrypted.
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CAVEATS
Remember to set permissions or umask to prevent readability of unencrypted files by other users.
SEE ALSO
passwd(1),
newusers(8),
useradd(8).
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