Linux / Unix: chroot Command Examples

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chroot command

I am a new Linux and Unix user. How do I change the root directory of a command? How do I change the root directory of a process such as web-server using a chroot command to isolate file system? How do I use a chroot to recover password or fix the damaged Linux/Unix based environment?

Linux / Unix: pwdx Command Examples

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pwdx command

I am new Linux and Unix system administrator. How do I find the current working directory of a process or server on Linux or Unix-like system using shell prompt?