Several files about the user in Linux

/etc/passwd file:

User name: Password placeholder: User id: Group ID: Comment Information: Home directory: User's default shell (default shell location:/etc/shells)

Example: Test:x:501:501::/home/test:/bin/bash

User name test: User ID 501: Group ID 501: No comment: Home directory/home/test: Default Shell/bin/bash

/etc/shadow file:

User name: encrypted password: Last password change: password minimum Age: Password maximum age: Password Expiration warning interval: Inactivity period: Account expiration: Reserved area

Example: Test:$1$zrqrwuxu$gjev180plwhj3nqhrvqyh0:16451:0:99999:7: ::

/etc/group file:

Group name: group Password placeholder: Group ID: Owning member (multiple members separated by commas)

Example: Sys:x:3:root,bin,adm

/etc/gshaow: Password information for the group

Example: Root:x:0:root

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Several files about the user in Linux