Am 12.01.2012 12:52, schrieb Dr. Michael J. Chudobiak: > On 01/12/2012 12:05 AM, Joachim Backes wrote: >> Hi all, >> >> adding a new user with "useradd ..." will create two additional files >> never removed: >> >> /etc/passwd- and /etc/shadow- >> >> Question: are these files only created for backup purposes, or is there >> another reason for this? > > /etc/passwd is world-readable, and contains the basic account info (id, real name, home folder). > > /etc/shadow is root-only-readable, and contains the password info. > > They are separate to improve security. > They are not backups. Those are the main files for local authentication. he was speaking about "/etc/shadow-" and NOT "/etc/shadow" and yes i am sure they are backups
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