How to check Kernel and OS Version, How to change file permissions, Whar are the default permissions of few files, In which file user id and password stored, Network configuration stored in which file, How to filter any keyword

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Accepted Answer

To check Kernel and OS Version, change file permissions, view default permissions of files, locate user id and password file, find network configuration file, and filter keywords.

To check Kernel and OS Version: Use 'uname -a' command
To change file permissions: Use 'chmod' command followed by permission code and file name
Default permissions of few files: For example, /etc/passwd has 644 permissions
User id and password stored in: /etc/passwd file
Network configuration stored in: /etc/network/interfaces file
To filter any keyword: Use 'grep' command followed by keyword and file name

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How to check Kernel and OS Version, How to change file permissions, Whar are the default permissions of few files, In which file user id and password stored, Network configuration stored in which file, How to filter any keyword

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