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absolute path

Linux realpath: Find Absolute Pathname For Given Command or File

How do I find out the canonicalised absolute pathname for a given command or file under Linux operating systems?
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Linux / UNIX: Print Current Working Directory with pwd command

Q. How do I display the absolute path to the current working directory under Linux or UNIX operating system?

A. The pwd command displays the absolute pathname of the current working directory to the computer screen.

Print name of current/working directory

Type pwd command:

Above command print the full filename of the current working directory i.e /home/vivek.

Display actual directory location

Use -P option to display the physical current working directory (all symbolic links resolved). For example, /home/lighttpd is /var/www/root/lighttpd:
cd /home/lighttpd



Now run with -P option
pwd -P


Understanding /etc/passwd File Format

Can you explain /etc/passwd file format for Linux and UNIX operating systems?
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