Logging in (1.1)

• Login name, password

• System password file: usually “/etc/passwd”

• /etc/passwd has 7 colon-separated fields:

maclean:x:132:114:James MacLean:

^^^1^^^ 2 ^3^ ^4^ ^^^^^^5^^^^^^

/u/maclean:/var/shell/tcsh

^^^^^6^^^^ ^^^^^^^7^^^^^^^

1: user name 5: “in real life”

2: password (hidden) 6: $HOME

3: uid 7: shell

4: gid

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