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RedHat 9 (Linux i386) - man page for chpasswd (redhat section 8)

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CHPASSWD(8)									      CHPASSWD(8)

       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


       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), newusers(8), useradd(8)

       Julianne Frances Haugh (jockgrrl@ix.netcom.com)

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