Answer Posted / shubhadip
It depends on your HOME directory. " ~ " sign denotes your
HOME directory and " /.. " for HOME's parent directory.
By default user's HOME directory is /home/user_name . So
at that time ls ~/.. command will show the contents of
directory /home .
But if somebody has set a different HOME directory
(e.g. /opt/apps/usr). Then the command will show the
contents of directory /opt/apps .
I used "HOME" for the environment variable and "home" for
directory name. These 2 are completely different thing.
If you want to know what is your HOME directory. Then you
can type echo $HOME
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