August 2000
Intermediate to advanced
896 pages
28h 17m
English
book
UNIX System Administration Handbook, Third Edition
by Scott Seebass, Garth Snyder, Evi Nemeth, Trent R. Hein
Content preview from UNIX System Administration Handbook, Third Edition
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6.1 THE/ETC/PASSWD FILE
The /etc/passwd file is a list of users recognized by the system. The system consults the file at login time to determine a user’s UID and to verify the user’s password. Each line in the file represents one user and contains seven fields separated by colons:
• Login name
• Encrypted password (unless a shadow password file is used; see below)
• UID number
• Default GID number
• “GECOS” information: full name, office, extension, home phone
• Home directory
• Login shell
For example, the following lines are all valid /etc/passwd entries.
root:jsg8Y.1p6uWMo:0:0:The System,,x6096,:/:/bin/cshjl:Hwex6bM8cT3/E:100:0:Jim Lane,ECT8-3,,:/staff/jl:/bin/shdotty:oP0vdZ/s93ZiY:101:20::/home/korbel/dotty:/bin/csh
The ...
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